Summarize the following court judgment. ivil Appeal No. 331 of 1978. From the Judgment and Order dated 3.9.1976 of the Cal cutta High Court in Appeal from Original decree No. 407 of 1974. B. Sen	 A.K. Verma and section Suikumaran for the Appellants. Tapash Chandra Ray and H.K. Puri for the Respondents. The Judgment of the Court was delivered by SHARMA	 J. This appeal by special leave arises out of a suit filed by the appellants for eviction of the respondent tenant (hereinafter referred to as the Corpora tion) from certain premises on Lalbazar Street	 Calcutta	 on the ground of sub letting. The City Civil Court	 Calcutta	 decreed the suit	 but on appeal by the tenant Corporation	 the Calcutta High Court reversed the judgment and dismissed the suit. Admittedly the defendant Corporation was inducted as a tenant under a registered deed of lease dated 23.4.1948 for a period of three years from 1.5.1948. After expiry of the period in 1951	 the Corporation continued in possession	 and by holding over became a month to month tenant. The premises consists of a big room	 described as room No. 3	 along with a small room for the use of a Darwan (porter)	 staying there as guard. The big room was	 from time to time	 leased out by the tenant Corporation in portions to differ ent subtenants and in 1960 the landlord brought a suit	 registered as Ejectment Suit No. 978 of 1960	 for the evic tion of the Corporation on several grounds including sub letting. In the meantime West Bengal Premises Tenancy Act	 1956 had been enacted	 and the provisions of section 13(1)(a) which are in the following terms	 were relied on by the parties: "section 13. Protection of tenant against evic tion. (1) Notwithstanding anything to the contrary in any other law	 no 635 order or decree for the recovery of possession of any premises shall be made by any Court in favour of the landlord against a tenant except on one or more of the following grounds	 namely: (a) where the tenant or any person residing in the premises let to the tenant without the previous consent in writing of the landlord transfers	 assigns or sub lets in whole or in part the premises held by him . ; . " 3. The tenant Corporation contended that it was permit ted to create sub leases under clause 6 of the lease docu ment which is quoted below and it cannot	 therefore	 be accused of sub letting without the consent of the landlords: "That the lessees shall use the demised prem ises as office in connection with their busi ness and shall be entitled to sublet the portion which may not be used by them. " It was asserted on behalf of the tenant Corporation that all the subtenants had been inducted in the premises in question in pursuance of the aforesaid permission and before the expiry of the lease period in 1951. The City Civil Court decided the issue 	n favour of the tenant Corporation on the ground that all the sub tenancies had been created within the period covered by the lease deed and before coming in force of the West Bengal Premises Tenancy Act	 1956. The suit was held to be not maintainable also on the ground that a legally valid notice terminating the tenancy had not been served on the tenant. The suit was thus dismissed on 30.8. 1962 by the judgment Ext. B(2). 4. The present suit was filed in 1972 alleging that the tenant Corporation has	 without the consent of the land lords	 created fresh sub tenancies in the premises in favour of other sub tenants after the dismissal of the earlier suit. The case is that after the original lease exhausted itself by efflux of time	 and otherwise also came to an end by the landlords ' notice terminating it	 the general permis sion under clause 6 of the lease deed	 mentioned above	 also disappeared. Alternatively the appellants have contended that even assuming that the term in clause 6 continues to bind the parties	 it does not authorise the respondent Corporation to sub let the entire premises. The dominant purpose of the lease was actual user by the tenant itself for the purpose of running its office and clause 6 permitted it to sub let 636 only such portion which was left unused as surplus. The appellants have also alleged default of payment of rent	 but the plea has been rejected by the trial court and has not been pressed before us. The suit was defended by the respondent Corporation contending that as held in the earlier suit the defendant was and is entitled to grant sub tenancies	 and the plain tiffs ' case is fit to be dismissed. Reliance was placed	 besides the plea of res judicata	 on the language of clause 6 which according to the defendant continues to bind the parties. The City Civil Court rejected the defendant 's case of res judicata and agreeing with the plaintiffs on the question of sub letting	 decreed the suit. It held that a number of sub tenants who were in possession of the premises at the time of the earlier suit have been substituted later by another set of sub tenants after the coming into force of the Act. The learned Judge also agreed with the plaintiffs that the entire premises was let out to sub tenants which was not consistent with the terms of the permission as mentioned in clause 6. The Court	 holding that the tenant had violated the provisions of the 1956 Act	 passed a decree for eviction in favour of the plaintiffs. The tenant Corpo ration appealed before the Calcutta High Court. The High Court disagreed with the City Civil Court on the interpretation of clause 6 of the lease deed	 and held that by reason of the judgment in the earlier suit	 the present suit was barred by the rule of res judicata. The appeal was	 accordingly	 allowed and the suit dismissed. Mr. B. Sen	 the learned counsel appearing in support of the appeal contended that since large portion of the disputed property was sub let to fresh sub tenants after the institution of the earlier suit of 1960	 there was no scope for applying the doctrine of res judicata to the present litigation. He inter alia argued that having regard to the change in the law brought about by the 1956 Act and special ly in view of the provisions of sections 13	 14 and 16	 the appellants are entitled to a decree. The factual position is that there are 16 sub ten ants as mentioned in Annexure B to the plaint who are occu pying the disputed room now. Out of them 5 had been inducted before the 1960 suit and were parties thereto (as was right ly pointed out by the respondent Corporation in its applica tion dated 17.12.1973 for amendment of the written state ment). The other 11 sub lessees were let in after the earli er suit	 when the 1956 Act was in force. The question is whether the creation of these sub tenancies violated the provisions of the Act. 637 In the earlier suit all the sub lesses were inducted during the period the lease was operative	 i.e.	 much before the present Act was passed. The question of violation of the provisions of the present Act	 therefore	 did not arise there. It follows that so far this issue is concerned the earlier judgment can not operate by way of res judicata. The main question which remains to be decided is whether in the circumstances	 the plaintiffs ' case	 based on alleged violation of the Act can be accepted. section 14 enjoins that after the commencement of the Act no tenant shall	 without the previous consent in writing of the landlord	 sub let the whole or any part of the premises held by him as a tenant; or transfer or assign his rights in the tenancy or in any part thereof. According to Mr. Tapas Ray	 the learned counsel of the respondent Corporation	 clause 6 of the lease deed	 which continued to bind the parties by reason of the Corporation holding over	 must be treated to contain the necessary consent of the appellants. As has been seen earli er	 this clause granted a general permission to the tenant to induct a sub tenant. Can such a provision in general terms satisfy the requirements of the Act? Or	 as has been suggested on behalf of the appellant	 the consent contem plated by the Act has to be specific in regard to each sub lease? 10. section 13 protects a tenant from eviction except on the grounds	 enumerated therein and one of the grounds in clause (a) of sub section (1) is in the following terms: "(a) where the tenant or any person residing in the premises let to the tenant without the previous consent in writing of the landlord transfers	 assigns or sub lets in whole or in part the premises held by him;" The language of Ss. 13 and 14 by itself does not resolve the issue. However	 the provisions of section 16 which is quoted below clearly indicate that permission to the tenant to sub let in general terms can not be deemed to be consent for the purposes of Ss. 13 and 14: "section 16 Creation and termination of sub tenan cies to be notified (1) Where after the commencement of this Act	 any premises are sub let either in whole or in part by the tenant with the previous consent in writing of the landlord	 the tenant and every sub tenant to whom the premises are sub let shall give notice to the landlord in the prescribed manner of the creation of the sub tenancy within one 638 month from the date of such sub letting and shall in the prescribed manner notify the termination of such subtenancy within one month of such termination (2) Where before the commencement of this Act	 the tenant with or without the consent of the landlord	 has sub let any premises either in whole or in part	 the tenant and every sub tenant to whom the premises have been sub let shall give notice to the landlord of such sub letting in the prescribed manner (within six months) of the commencement of this Act and shall in the prescribed manner notify the termination of such sub tenancy within one month of such termination (3) Where in any case mentioned in sub section (2) there is no consent in writing of the landlord and the landlord denies that he gave oral consent	 the Controller shall	 on an application made to him in this behalf either by the landlord or the sub tenant within two months of the date of the receipt of the notice of sub letting by the landlord or the issue of the notice by the sub tenant	 as the case may be	 by order declare that the ten ant 's interest in so much of the premises as has been sub let shall cease and that the subtenant shall become a tenant directly under the landlord from the date of the order. The Controller shall also fix the rents payable by the tenant and such sub tenant to the landlord from the date of the order. Rents so fixed shall be deemed to be fair rent for purposes of this Act. " It is plain from the above that the Act contemplates that while one sub tenant may be evicted another may continue in the premises as a tenant directly under him	 depending on the circumstances. We are	 therefore	 of the view that previous consent in writing of the landlord with respect to each sub letting separately is essential and a general authority to the tenant in this regard will not be suffi cient in law. Our view is supported by the observations in M/s Shalimar Tar Products Ltd. vs H.C. Sharma and Others	 ; ; a case arising under the Delhi Rent Control Act. An examination of Ss. 14(1)(b)	 16	 17 and 18 of the Delhi Rent Control Act would show that the two Acts (West Bengal Act and the Delhi Act) are similar so far the present question is concerned. In the present case	 since it is not suggested on behalf of the respondent that consent of the appellants was obtained specifically for each of the sub tenancies	 the respondent Corporation 639 must be held to have violated section 14. The appellants have thus	 established the ground mentioned in section 13(1)(a) and are entitled to succeed. None of the sub tenants has been impleaded in the present suit	 but as it is not the case of the tenant Corpo ration that any of them had sent any notice to the plain tiffs	 the suit	 so far the present respondent is concerned	 can not fail on the ground of their non impleading. However	 the sub tenants can not be bound by the finding in this suit that they have failed to serve a notice as prescribed by the Act on the plaintiffs and will be entitled to be heard if and when the plaintiffs seek their eviction. So far the sub tenants who had been inducted in the premises earlier and were parties to the 1960 suit may have still a better claim on the strength of the decree in their favour and may insist that they would be entitled to continue in possession as tenants directly under the plaintiffs. For the reasons mentioned above	 the decision of the High Court is set aside and the decree of eviction passed by the City Civil Court against the respondent Corporation is restored. The appeal is accordingly allowed with costs throughout. P.S.S. Appeal allowed.

Section 13(1)(a) of the West Bengal Premises Tenancy Act	 1956 provides for recovery of possession where the tenant or any person residing in the premises let to the tenant without the previous consent in writing of the land lord transfers	 assigns or subsets in whole or in part the premises held by him. Section 14 forbids the tenant from sub letting the premises without the previous consent in writing of the landlord. Sub section (1) of section 16 requires the tenant and every sub tenant to whom the premises are sub.let to give notice to the landlord of the creation of the sub tenancy within one month from the date of such sub letting and also to notify the termination of such sub tenancy within one month of such termination. Sub section (2) prescribes such a notice in respect of sub tenancies created with or without the consent of the landlord before the commencement of the Act	 within the time specified therein. Where there is no such consent in writing from the landlord	 sub section (3) provides for cessation of tenant 's interest in the portion sub let and the sub tenant becoming a tenant directly under the landlord in certain circum stances. Clause 6 of the lease deed creating tenancy for a period of 'three years from 1st May 1948 permitted the respondent tenant to sub.let any portion of the demised premises which was left unused or surplus. After expiry of the lease period in 1951	 the said tenant continued in possession	 and by holding over became a month to month tenant. It had	 howev er	 created certain sub tenancies within the period covered by the lease and before the Act came into force. A suit for its eviction brought by the landlord in 1960 was dismissed by the trial court. The landlord filed a fresh suit in 1972 on the Found that the tenant had created sub.tenancies in the premises after the dismissal of the earlier suit. The tenant advanced the plea of res judicata and con 632 633 tended that it was and is entitled to grant sub tenancies under cl. 6 of the lease deed which continues to bind the parties. Rejecting the case of res judicata	 the trial court held that a number of sub tenants who were in possession of the premises at the time of the earlier suit had been sub stituted later by another set of sub tenants after the coming into force of the Act	 and that the entire premises was let out to sub tenants which was not consistent with the terms of the permission as mentioned in cl. 6. Allowing the appeal	 the High Court	 however	 held that the suit was barred by the rule of res judicata. In this appeal by special leave	 it was contended for the appellants that since a large portion of the disputed property was sublet to fresh sub tenants after the institu tion of the earlier suit of 1960 there was no scope for applying the doctrine of res judicata	 and that the consent contemplated by the 1956 Act has to be specific in regard to each sublease	 which requirement was not satisfied by the general permission granted by cl. 6 of the lease deed. Allowing the appeal	 HELD: 1. In the earlier suit all the sub lessees were inducted during the period the lease was operative	 i.e.	 much before the Tenancy Act was passed. The question of violation of the provisions of the said Act	 therefore	 did not arise there. The earlier judgment cannot thus operate by way of res judicata. [637A] 2.1 The provisions of section 16 of the Act clearly indicate that permission to the tenant to sub let in general terms cannot be deemed to be consent for the purposes of sections 13 and 14. [637F] 2.2. The Act contemplates that while one sub tenant may be evicted another may continue in the premises as a tenant directly under the landlord	 depending on the circumstances. Therefore	 previous consent in writing of the landlord with respect to each sub letting separately is essential. Since in the instant case consent of the appellant landlord was not obtained specifically for each of the sub tenancies	 the respondent tenant must be held to have violated section 14. The appellants are thus entitled to succeed under section 13(1)(a). [638F	 H] M/s Shalimar Tar Products Ltd. vs H.C. Sharma & Ors.	 ; 	 referred to. It was not the case of the respondent that any of the sub 634 tenants had sent any notice to the landlord as prescribed by the Act. Therefore	 the eviction suit cannot fail on the ground of non impleading of the sub tenants. However	 the sub tenants cannot be bound by that finding in the suit. They will be entitled to be heard if and when the landlord seeks their eviction. [639B]