Summarize the following court judgment. Appeal No. 166 of 1951. Appeal from the Judgment and Decree dated September 15	 1948	 of the High Court of Judicature for the State of Punjab at Simla (Mahajan and Teja Singh JJ.) in Regular Second Appeal No. 1844 of 1945 from the Judgment and Decree dated June 5	 1945	 of the Court of the District Judge	 Gurgaon	 in Civil Appeal No. 171 of 1943	 arising out of the Judgment and Decree dated August 27	 1943	 of the Court of the Subordinate Judge	 Gurgaon	 in Civil Suit No. 11 of 1943. Tarachand Brijmohanlal for the appellant. Gurubachan Singh (Radha Krishan Aggarwal	 with him) for the respondent. 1952	 November 7. The Judgment of the Court was delivered by CHANDRASEKHARA AIYAR J. The plaintiffs	 Joti Prasad and Sat Narain	 sued for partition and possession of their two fifths share in the suit properties alleging that the first defendant wag alone in possesSion of the same	 having redeemed a mortgage executed by the joint family of which the plaintiffs and defendants were members	 in favour of one Raghumal in the year 1896 on paying Rs. 5	800. Defendants 2 to 5 were impleaded as co sharers. Out of them	 defendants 2 and 3 admitted the claims of the plaintiffs. Defendant 4 died pending suit	 and her name was struck off. Defendant 5 supported the first defendant. On the date of the trial court 's decree	 the two plaintiffs were held entitled to one sixth share each. The first defendant resisted the plaintiffs ' claim. He contended that the redemption by him in 1920 was not on behalf of the joint family as alleged by the plaintiffs but on his own account as there had been a disruption of the joint family status much earlier	 and that before the plaintiffs could get arty relief	 they were bound to pay him not merely a proportionate share in the sum of Rs. 5	800 which he paid to the mortgagee for redemption but their share in the original mortgage debt of Rs. 11	200. He also denied that the original mortgage was executed on behalf of the joint family. The Subordinate Judge	 and on appeal	 the High Court found that the original mortgage was a mortgage transaction of the joint family	 and that the first defendant	 Ganeshi Lal	 redeemed the mortgage on his own account and for his own benefit at a time when there was no longer any joint family in existence. It was further held by the trial court that the plaintiffs and other co sharers were bound to pay their proportionate share of the amount paid by the first defendant to redeem the mortgage	 namely	 Rs. 5	800. But from this a sum of Rs. 1	200 which he had already received by way of redemption of certain mortgage rights had to be deducted. The District Judge enhanced this sum of RS. 4	600 to 245 Rs. 5	000	 as the first defendant had paid taxes due on the property up to 1940	 but he confirmed the main findings of the Subordinate Judge. A second appeal preferred by the first defendant was dismissed by the High Court at Simla (Mehr Chand Mahajan and Teja Singh JJ.). They repelled the contention of the first defendant that a suit for partition and possession was not maintainable without bringing a suit for redemption. They also negatived his right to get a proportionate share in the amount of Rs. 11	200 due on the mortgage. Two other learned Judges gave leave to appeal under section 109 (c) of the Civil Procedure Code	 as a substantial question of law was involved. Three points were argued before us by learned counsel for the appellant; firstly	 there was an assignment of the mortgage in favour of the appellant with the result that the entire rights of the mortgagee vested in him; secondly	 even viewing the question as one of legal subrogation	 he was entitled	 under the principles of justice	 equity and good conscience which governed the State of Punjab	 as the has not been applied to the State	 to recover from the co mortgagors not merely their shares in the sum of Rs. 5	800 which he had paid for redemption but their shares in the full amount of Rs. 11	200 due under the mortgage; and thirdly	 that the suit for partition without asking for redemption was not maintainable. Points Nos. 1 and. 3 have no force whatever. The registered deed of redemption does not contain any words of assignment. To say that Ganeshi Lal shall be the owner of the entire amount due from the mortgaged property is something different from stating that the security has been assigned in his favour. On the other hand	 the endorsement of receipt of payment on the back of the mortgage deed itself and the statement of the mortgagee that he has released the mortgaged property from his mortgage go to show that there was no assignment. 246 The non maintainability of the suit does not seem to have been in issue either before the trial court or before the District Judge	 and it appears to have been raised for the first time before the High Court. It was pointed out by the learned Judges	 and quite rightly	 that so long as no question of limitation was involved	 there was no objection to a claim for redemption and one for possession and partition being joined together in the same suit. Only the second point remains for consideration	 and this raises an interesting question of law. It is not denied that Ganeshi Lal who redeemed the prior mortgage is subrogated to the mortgagee 's rights	 but the controversy is about the extent of his rights as subrogee. By virtue of the redemption	 does he get all the rights of the mortgagee and hold the mortgage as a shield against the co mortgagors for the full amount due on the mortgage on the date of redemption whatever he may have himself paid to get it discharged	 or does he stand in the mortgagee 's shoes only to the extent of getting reimbursed from the comortgagors for their shares in the amount actually paid by him? The lower courts have held that the latter is the correct position in law	 but the appellant has challenged it as unsound. The first two clauses of the present section 92 of the run in these terms: " Any of the persons referred to in section 91 (other than the	 mortgagor) and any co mortgagor shall	 on redeeming property subject to the mortgage	 have	 so far as regards redemption	 foreclosure or sale of such property	 the same rights as the mortgagee whose mortgage he redeems may have against the mortgagor or any other mortgagee. The right conferred by this section is called the right of subrogation	 and a person acquiring the same is said to be subrogated to the rights of the mortgagee whose mortgage he redeems. " It is a new section and was inserted by the amending Act XX of 1929. The original sections 74 and 247 75 conferred the right to redeem in express terms only on second or other subsequent mortgagees	 though the co mortgagor 's right to subrogation on redemption was recognised even before the Act. As the has not been extended to the State of East Punjab	 it is unnecessary to decide whether section 92 is retrospective in its operation	 on which point there has been a conflict of opinion between the several High Courts. Section 95 of the Act which removed the confusion caused by the old section which	 conferring on the co mortgagor what was called a charge	 and thus seeming to negative the application of the doctrine of subrogation	 is also inapplicable to the present case. We therefore steer clear of sections 74 and 75 of the old Act and sections 92 and 95 of the present Act	 and we are free to decide the question on principles of justice	 equity and good conscience. If we remember that the doctrine of subrogation which means substitution of one person in place of another and giving him the rights of the latter is essentially an equitable doctrine in its origin and application	 and if we examine the reason behind it	 the answer to the question which we have to decide in this appeal is not difficult. Equity insists on the ultimate payment of a debt by one who in justice and good conscience is bound to pay it	 and it is well recognised that where there are several joint debtors	 the person making the payment is a principal debtor as regards the part of the liability he is to discharge and a surety in respect of the shares of the rest of the debtors. Such being the legal position as among the co mortgagors	 if one of them redeems a mortgage over the property which belongs jointly to himself and the rest	 equity confers on him a right to reimburse himself for the amount spent in excess by him in the matter of redemption; he can call upon the co mortgagors to contribute towards the excess which he has paid over his own share. This proposition is postulated in several authorities. In the early case of Hodgson vs Shaw (1) Lord Brougham said: (1) ; ; 248 "The rule is undoubted	 and it is one founded on the plainest principles of natural reason and justice	 that the surety paying off a debt shall stand in the place of the creditor	 and have all the rights which he has	 for the purpose of obtaining his reimbursement. " I have italicised the word " reimbursement Sheldon in his well known treatise on Subrogation has got the following passage in section 13 of the Second Edition: " There is another class of cases in which he who has paid money due upon a mortgage of land to which he had some title which might be affected or defeated by the mortgage	 and who was thus entitled to redeem	 has the right to consider the mortgage as subsisting in himself	 and to hold the land as if it subsisted	 until others interested in the redemption	 or who held also the right to redeem	 have paid a contribution. " Be it noted that what is spoken of here is a contribution. Dealing with the subject of subrogation of a	 surety by payment of a promissory note and citing the observations of the Alabama Court	 Harris says in his work on Subrogation (1889 Edition) at page 125: " The rule is	 that a surety paying a debt	 shall stand in the place of the creditor; and is entitled to the benefit of all the securities which the creditor had for the payment of the debt	 from the principal debtors; in a word	 he is subrogated to all the rights of the creditor; the surety	 however	 cannot avail himself of the instrument on which he is surety	 by its payment. By payment it is discharged and ceases to exist	 and the payment will not	 even in equity	 be considered an assignment; the surety merely becomes the creditor of the principal to the amount paid for him. " To compel the co debtors or co mortgagors to pay more than their share of what was paid to the creditor or mortgagee would be to perpetrate an inequity or 249 injustice	 as it would mean that the debtor who is in a position to pay and pays up can obtain an advantage for himself over the other joint debtors. Such a result will not be countenanced by equity; the favouritism shown by law to a surety	 high as it is	 does not extend so far. The surety can ask to be indemnified for his loss: he can invoke the doctrine of subrogation as an aid to his right of contribution. Sheldon says in section 105 of his book : " The subrogation of a surety will not be carried further than is necessary for his indemnity; if he buys up the security at a discount	 or makes his payment in a depreciated currency	 he can enforce it only for what it cost him. He cannot speculate at the expense of his principal ; his only right is to be repaid. " In section 178	 Harris is still stronger. " Since subrogation is founded on principles of equity	 the surety who would avail himself of the doctrine and invoke equity must do equity ; and while ' he is entitled to a reimbursement in all that he pays out properly for his principal	 debt	 interest and cost	 he is not entitled	 in any way to recover more than he has paid. For instance	 if he pays the debt of his principal	 in depreciated currency	 the rule would seem to be that he could demand from the principal only the value of that currency at the time he made the payment. Nor would he upon principles of equity be permitted to purchase the debt at a discount and then be subrogated to collect the whole face value of the debt	 and especially if he held securities	 or if the creditor held securities which would fall into his hands	 out of which to pay the debt; because the securities are trust funds for the purpose	 and set aside for the payment of that debt and an assignee of trustee cannot speculate in the purchase of claims against the fund in his hands. It would not be equality; it would not be equity. " While it can be readily conceded that the joint debtor who pays up and discharges the mortgage 250 stands in the shoes of the mortgagee	 and secures to himself the benefit of the security by such payment	 the extent to which he can enforce his right as against the other joint debtors is a different matter altogether. In his monumental work on Equity Jurisprudence	 Pomeroy points out that he will be subrogated to the rights of the mortgagee only to the extent necessary for his own equitable protection. (See page 632 of Volume IV of the Fifth Edition by Symons). Clearer still is the passage found at page 640 of the same book: " The mortgagor himself who has conveyed the premises to a grantee in such manner that the latter has assumed payment of the mortgage debt becomes an equitable assignee on payment	 and is subrogated to the mortgagee	 so far as is necessary to enforce his equity of reimbursement or exoneration from such grantee. " It is as regards the excess of the payment over his own share that the right can be said to exist. Pomeroy says this at pages 660 and 661: "In general	 whenever redemption by one of the above mentioned persons operates as an equitable assignment of the mortgage to himself	 he can keep the lien of it alive as security against others who are also interested in the premises	 and who are bound to contribute their proportionate shares of the sum advanced by him	 or are bound	 it may be	 to wholly exonerate him from and reimburse him for the entire payment. . The doctrine of contribution among all those who are interested in having the mortgage redeemed	 in order to refund the redemptor the excess of his payment over and above his own proportionate share	 and the doctrine of equitable assignment in order to secure such contribution	 are the efficient means by which equity completely and most beautifully works out perfect justice and equality of burden	 under these circumstances. . . . " Whatever the difference might be between the English law and the Indian law as regards the right 251 to enforce decrees and securities for the due payment of a debt in the case of a surety who discharges a simple money debt and a surety who pays up a mortgage	 it is still noteworthy that Section V of the Mercantile Law Amendment Act of 1856 (England) provided for indemnification by the principal debtor( for the advances made and loss sustained by the surety. There is a distinction in this respect between a third party who claims subrogation and a co mortgagor who claims the right	 and this is brought out by Sir Rashbehary Ghose in his Law of Mortgage in India	 Volume I	 5th Edition. He says at page 354	 pointing out that co mortgagors stand in a fiduciary relation : " I should add that an assignee of a mortgage is entitled	 as a rule	 to recover whatever may be due on the security. But if he stands in a fiduciary relation	 he can only claim the price which he has actually paid together with incidental expenses. " The right of the co mortgagor who redeems the mortgage is spoken of as the right of reimbursement at page 372 in the following passage : "Strictly speaking	 therefore	 when one of several mortgagors redeems a mortgage	 he is entitled to be treated as an assignee of the security which be may enforce in the usual way for the purpose of re imbursing himself. " The redeeming co mortgagor being only a surety for the other co mortgagors	 his right is	 strictly speaking	 a right of reimbursement or contribution	 and in law	 when we have regard to the principles of equity and justice	 there should be no difference( between a case where he discharges an unsecured debt and a case where he discharges a secured debt. It is unnecessary for us to decide in this appeal whether section 92 of the was intended to strike a departure from this position when it states that the co mortgagor shall have the same 252 rights as the mortgagee whose mortgage he redeems	 and whether it was intended to abrogate the rule of equity as between co debtors	 and provide for the enforcement of the liability on the basis of the amount due under the mortgage ; and this is because	 as has been already stated	 we are governed not by the statute but by general principles of equity and justice. If it is equitable that the redeeming co mortgagor should be substituted in the mortgagee 's place	 it is equally equitable that the other co mortgagors should not be called upon to pay more than he paid in discharge of the encumbrance. In this connection	 reference may be made with advantage to the decision of Sir Asutosh Mookerjoe and Teunon JJ. in DigambarDas vs Harendra Narayan Panday (1) where the question arose as regards the the rate of interest and the period for which the redeeming co mortgagor would be entitled. There is an elaborate examination of the nature of the right of subrogation obtained by one of several joint comortgagors who redeems the mortgaged property	 and in the course of the discussion the following observations occur: " In so far as the amount of money which he is entitled to recover from his co mortgagors is concerned	 he can claim contribution only with reference to the amount actually and properly paid to effect redemption to which sum he can add his legitimate expenses . . The substitution	 therefore	 of the new creditor in place of the original one	 does not place the former precisely in the position of the latter for all purposes. . If therefore one of several mortgagors satisfies the entire mortgage debt	 though upon redemption he is subrogated to the right and remedies of the creditor	 the principle has to be so administered as to attain the ends of substantial justice regardless of form ; in other words	 the fictitious cession in favour of the person who effects the redemption	 operates only to the extent to which it is necessary to apply it for his indemnity and protection." (1) 258 There is a definite expression of opinion by the Madras High Court on the point in the decision reported in Suryanarayana vs Sriramulu(1). In that case	 a purchaser of a half share of the equity of redemption claimed to recover half of the amount of the mortgage on the security of the other share in the hands of the defendant	 and it was held that as his purchase of the decree on the mortgage was prior to his purchase of the equity of redemption	 he was entitled to the full amount claimed by him. The learned Judges distinguish the case from one where one of two mortgagors discharges an encumbrance binding on both	 and say that in such a case the mortgagor doing so could not recover from his comortgagors more than a proportionate share of the amount actually paid by him. After this rather lengthy discussion of the subject	 we consider it unnecessary to notice and comment on the several decisions cited for the appellant. It may be said generally that they only lay down that in cases where the 	 as it stood originally or as amended in 1929	 is not applicable	 we are governed by the principles of equity	 justice and good conscience	 and that sections 92 and 95 embody such principles. None of the cases deals with the extent or degree of subrogation	 and there is nothing in them which runs counter to the view that the doctrine must be applied along with other rules of equity	 so that the person who discharges the mortgage is amply protected	 and at the same time there is no injustice done to the other joint debtors. He who seeks equity must do equity	 and we shall be violating this rule if we give effect to the appellant 's contention. The High Court	 in our opinion	 reached the correct conclusion. The parties are not agreed on the shares to which the plaintiffs are entitled	 and this is because after the date of the final decree some of the branches have become extinct by the deaths of their representatives. Whether under customary law in the Punjab	 uncles (1) 254 exclude nephews or they take jointly	 and whether succession is per stirpes or per capita	 was the subject of disagreement at the Bar before us. This question must therefore be left over for determination by the trial court	 and the case will have to go back to that court for effecting partition and delivery of possession according to the shares to which the plaintiffs may be found entitled. Subject to what is contained in the foregoing paragraph	 the appeal will stand dismissed with costs. Appeal dismissed.

On principles of equity	 justice and good conscience	 which apply to the Punjab (where the 	 is not in force) if one of several joint mortgagors redeems the entire Mortgage by paying a s less than the full amount due under the mortgage	 he is entitled to receive from his co mortgagors	 only their proportionate shares on the amount actually paid by him. He is not entitled to claim their proportionate shares on the amount which was due to the mortgagee under the terms of the mortgage on the date of redemption. Hodgson vs Shaw ; 	 Digambar Das vs Harendra Narayan Panday [(1910) and Suryanarayana vs Sriramulu [(1913) referred to. Judgment of the High Court of Punjab at Simla affirmed.