Summarize the following court judgment. ivil Appeal No. 3297 of 1981. From the Judgment and Order dated 17.8.1981 of the Orissa High Court in Misc. Appeal No. 145 of 1981. R.K. Mehta for the Appellant. A.K. Sen	 Arun Madan	 R.K. Sahoo and J.D.B. Raju for the Respondent. The Judgment of the Court was delivered by VERMA	 J. This appeal by special leave under Article 136 of the Constitution challenges the judgment dated 17.8.1981 of the High Court of Orissa dismissing Misc. Appeal No. 145 of 1981 against the judgment dated February 28	 1981 passed by the Subordinate Judge	 Baripada	 District Mayurbhanj in Title Suit No. 106 of 1980 by which the arbitrator 's award for a sum of Rs.21	11	835.00 in favour of the plaintiff respondent	 Niranjan Swain	 was made a rule of the court and a decree was passed for that amount together with interest at the rate of six per cent per annum from the date of the decree. The main ground taken in this appeal was that the arbi trator 's award was per se invalid since it gave no reasons. Some other points were raised to which we shall advert later. The question of invalidity of an arbitrator 's award merely on the ground that it gave no reasons was involved for decision in a large number of matters pending in this Court and in view of the importance of this common question the bunch of cases was heard and decided by the Constitution Bench in Raipur Development Authority and others vs M/s Chokhamal Contractors and others	 1. The Constitution Bench has held that the absence of reasons in the award does not by itself result in its invalidity except where the giving of reasons by the arbitrator for the award is the requirement of the arbitration agreement or the deed of submission or an order made by the Court or statute governing the arbitration. Accordingly	 this contention raised in the present appeal 824 and all other similar matters was rejected by the Constitu tion Bench with a direction that all such cases should go back to the Division Bench for disposal in accordance with law on the remaining points surviving therein for decision. This is how the present appeal has come before us. The conclusion reached by the Constitution Bench in the above case and the direction given therein is as under: "Having given our careful and anxious consid eration to the contentions urged by the par ties we feel that law should be allowed to remain as it is until the competent legisla ture amends the law. In the result we hold that an award passed under the is not liable to be remitted or set aside merely on the ground that no reasons have been given in its support except where the arbitra tion agreement or the deed of submission or an order made by the court such as the one under Section 20 or Section 21 or Section 34 of the Act or the statute governing the arbitration requires that the arbitrator or the umpire should give reasons for the award. These cases will now go back to the Division Bench for disposal in accordance with law and the view expressed by us in this decision. " The only points now urged by Shri G.L. Sanghi	 learned counsel for the appellant	 are two	 namely	 (1) no interest could be awarded by the arbitrator in the present case upto the date of the award but the same is obviously included in the lumpsum award of Rs.21	 11	835.00; and the invalid part of the award not being severable from the rest	 the entire award must be set aside; and (2) the High Court in its cryptic order has wrongly assumed as correct the trial court 's refusal to call the arbitrator for being examined in the court. The learned counsel contended that any one of these defects was sufficient to set aside the entire award. In reply Shri Arun Madan	 learned counsel for the re spondent	 primarily contended that the arbitrator was empow ered to award interest upto the date of award. In the alter native	 learned counsel for the respondent contended that the invalid part of the award relating to grant of interest upto the date of the award was severable and	 therefore	 only that part should be set aside instead of setting aside the whole award. He also contended that the High Court did not make any wrong assumption and refusal to call the arbi trator for examination 825 was justified. It was also urged that in the present case there was nothing to indicate that calling the arbitrator for examination in the court was at all necessary. Before proceeding to consider the surviving points now urged on behalf of the appellant we may refer briefly to the few facts which alone are relevant at this stage. The con tract for the work "Construction of Earth Dam (balance work) of Sansiali Nai M.I. Project" in Division Mayurbhanj	 Bari pada	 was given by the appellant	 State of Orissa	 to re spondent	 Niranjan Swain and the agreement between the parties contained an arbitration clause for adjudication of disputes arising out of the contract. Consequently	 the dispute relating to the remaining claim for payment made by the respondent was referred for adjudication to the arbitra tor in terms of the arbitration clause contained in the agreement. The respondent 's claim before the arbitrator was for the amount of Rs. 19	04	689.00 as the balance amount due to him and for return of the security deposit of Rs.28	000.00 or in all the total of Rs. 19	32	689.00 as the principal amount. The respondent also claimed interest on the sum of Rs. 19	04	689.00 at the rate of 18 per cent per annum from 15.4.1977 to 15.5.1978	 namely	 the date of submission of the statement of claim before the arbitrator amounting to Rs. 3	71	4 14.00 and interest on the security deposit of Rs. 28	000.00 at the same rate from 15.9.1977 to 15.5.1978 amounting to Rs.3	360.00. The respondent further claimed interest at the rate of 18% per annum from 16.5. 1978 till payment of the amount to the respondent by the appellant. In the statement of claim the total amount claimed was mentioned at Rs.23	07	463.00 together with interest @ 18% per annum on Rs. 19	32	689.00 from 16.5.1978 to the date of the award. The appellant denied the respond ent 's claim including the claim for payment of interest. The arbitrator gave the award dated 2.12.1980 as under: "AWARD After perusal of the claim statements and counter statements	 the counter claim of the respondent	 the rejoinder of the claimant	 the documentary and oral evidence and on a careful consideration of the submissions and arguments of the parties and the IR advocate	 I have come to the conclusion that the claimant is entitled to get a sum of Rs.21	11	835.00 (Rupees twenty one lakhs eleven thousand eight hundred thirty five only) in full and final satisfac 826 tion of his claims till the date of the award from the respondent. The respondent is not entitled to get any amount towards his counter claim from the claimant. sd/ B.S. Patnaik Arb itrator 2/1 2/1980" (emphasis supplied) It is on the basis of the contents of this award that the above contentions have to be considered and decided. We may dispose of the second point urged by learned counsel for the appellant straightaway since it does not merit any elaborate consideration. The argument of the learned counsel for the appellant relating to calling the arbitrator for examination as a witness in the court was based on the decision of the Orissa High Court in State of Orissa vs D.C. Routray	 AIR 1983 Orissa 163. That decision itself says that even though an arbitrator is a competent witness	 the court must exercise the power of calling him as a witness cautiously and sparingly and not in a routine manner. It is obvious that when the court is requested to call the arbitrator for examination as a witness it must be shown that there is some cogent ground for his examination within the permissible limits. Nothing has been shown in the present case to indicate that it was at all necessary to call the arbitrator as a witness to depose on any matter which could legitimately be examined by the court in the proceedings. This alone is sufficient to justify the view taken by the High Court. This contention of learned counsel for the appellant is	 therefore	 rejected. The only point surviving for consideration now relates to the grant of interest by the arbitrator and its effect on the validity of the award. It is obvious from the contents of the award and the details of the respondent 's claim before the arbitrator that a lumpsum amount of Rs.21	11	835.00 awarded in the respondent 's favour by the arbitrator was in full and final satisfaction of all the respondent 's claims before the arbitrator till the date of the award. As mentioned earlier	 the respondent 's claim before the arbitrator mentioned the sum of Rs.19	04	689.00 plus the security deposit of Rs.28	000.00 or in all Rs. 19	32	689.00 only as the total principal amount of the claim and the sum claimed in excess thereof was on account of interest. The grant of a lumpsum amount of Rs.21	11	835.00 in the award in full and final 827 satisfaction of all the claims till the date of the award must	 therefore	 obviously include interest also. It is equally plain that the claim for the entire principal amount was not accepted by the arbitrator. The effect on the ques tion of validity of the award has to be decided on this basis. It is settled by the decision of this Court in Executive Engineer (Irrigation)	 Balimela and others vs Abhaduta Jena and others	 18 that in cases wherein the reference to arbitration was made prior to the commencement of the 	 on August 19	 1981	 the arbitra tor is not empowered to grant interest for the period either before the commencement of the proceedings or during the pendency of the arbitration. This is clear from the position summarized in Abhaduta Jena 's case (supra)	 as under: "In the remaining cases which arose before the commencement of the 	 the respondents are not entitled to claim interest either before the commencement of the proceed ings or during the pendency of the arbitra tion. They are not entitled to claim interest for the period prior to the commencement of the arbitration proceedings for the reason that the Interest Act	 1939	 does not apply to their cases and there is no agreement to pay interest or any usage or trade having the force of law or any other provision of law under which the claimants were entitled to recover interest. They are not entitled to claim pendente lite interest as the arbitrator is not a court nor were the reference to arbitration made in suits. " The learned counsel for the respondent placed reliance on the decision of this Court in Gujarat Water Supply and Severage Board vs Unique Erectors (Gujarat) (P) Ltd. and another; 	 in support of his primary conten tion that the arbitrator was empowered to grant interest upto the date of award. We are unable to construe this judgment in the manner suggested by learned counsel for the respondent. The decision clearly refers to Abhaduta Jena 's case (supra) and also follows it. The primary contention of the learned counsel for the respondent that the award does not suffer from any infirmity by grant of interest therein upto the date of award is	 therefore	 rejected. It cannot	 therefore	 be disputed that in the present case wherein the reference to arbitration was made and even the award was given prior to the commencement of the Inter est Act	 1978	 on August 19	 1981	 the arbitrator had no jurisdiction to grant any amount as interest 828 for any period either upto the date of submission of the claim before him or pendente lite upto the date of the award. From the above	 it follows that inclusion of the amount of interest in the lumpsum award of Rs.21	11	835.00 by the arbitrator does render that part of the award invalid. The question now is of the consequence of this invalidi ty on the entire award. The learned counsel for the appel lant contended that the invalid part of the award not being severable from the rest the entire award must be set aside. On the other hand	 the learned counsel for the respondent urged that there is no difficulty in separating the invalid part from the rest and this could easily be done by deduct ing from the total sum of Rs.21	11	835.00 granted in the award	 the maximum interest calculated at the rate of 18% per annum which was claimed by the respondent before the arbitrator upto the date of the award (2.12.1980). He urged that such a view cannot	 in any manner	 prejudice the appel lant and if at all it can work only to the detriment of the respondent who make this suggestion. In our opinion it is possible in the present case to sever the invalid part relating to interest in order to sustain the valid part of award. Accordingly	 we requested both sides to calculate the total amount of interest and give to us the agreed figure. The agreed figure of Rs. 12	65	87 1.97 has been given by them as the maximum amount of interest which could be included in the award of Rs.21	 11	835.00	 in accordance with the respondent 's claim before the arbitrator. It is common ground that the invalid part of the award on the basis of grant of interest by the arbi trator cannot exceed the amount of Rs. 12	65	87 1.97 out of the total Sum of Rs.21	 11	835.00. It is also not disputed that the balance amount remaining after deduction of Rs. 12	65	871.97 cannot be tainted with any invalidity. The learned counsel for the respondent has confined the respond ent 's claim in the alternative to upholding of the award only in respect of this balance amount and no more. We do not see any reason why the award should not be modified and sustained to this extent only. We are conscious of the fact that the interest amount of Rs. 12	65	871.97 so calculated for deduction from the total amount of Rs.21	 11	835.00 granted in the award is in excess of the interest calculated on the remaining balance treated as principal amount at this stage on the above suggestion. However	 in the peculiar circumstances of this case and in view of the alternative contention on 829 behalf of the respondent	 we see no reason for rejecting	 in the present case	 this alternative contention also. Viewed in this manner	 the balance amount of the award would not be tainted with any invalidity and	 therefore	 it would also be just and proper to sustain the award to this extent only. We	 therefore	 reject the contention of learned counsel for the appellant that the entire award should be set aside and instead accept the alternative contention of learned counsel for the respondent. In view of the above	 the agreed amount of interest upto the date of the award (2.12.1980)	 that is	 Rs. 12	65	871.97 is deducted from the amount of Rs.21	11	835.00 leaving the balance amount of Rs.8	45	963.03 say Rs.8	45	963.00. This amount of Rs.8	45	963.00 survives as the valid part of the award and	 therefore	 the decree of the courts below is modified to this extent so that the decree in favour of the respondent now remains for the sum of Rs.8	45	963.00 only together with interest thereon at the rate of 6% per annum from the date of the decree passed by the trial court until payment. In view of the partial success of both sides	 the parties shall bear their own costs throughout. The appeal is partly allowed in this manner. We are informed that the respondent has withdrawn a certain amount against the decree during the pendency of this appeal. We direct that the amount due to the respondent shall be calculated on the basis of this modified decree. In case	 the amount obtained by the respondent is less than the amount to which the respondent is found entitled as a result of this modified decree	 the remaining amount shall be paid to the respondent with interest @ 12% per annum from 8.12. 1981 in terms of the interim order of that date passed in this appeal; and in case	 the amount obtained by the re spondent is in excess of that to which he is found entitled	 the excess amount shall be refunded by the respondent to the appellant similarly with interest at the same rate of 12% per annum from 8.12. 1981 upto the date of its refund. T.N.A. Appeal allowed partly.

The respondent was awarded a contract for construction of Earth Dam by the appellant State of Orissa. His dispute relating to the remaining Claim for payment was referred to an arbitrator for adjudication. Before the arbitrator the respondent claimed (i) the balance amount due to him; (ii) his security deposit with the appellant; and (iii) interest	 on the balance amount due and security deposit	 upto the date of award. On 2.12.1980 the arbitrator gave a lump sum award in favour of the respondent inclusive of interest upto the date of award. The Trial Court made the award a rule of the Court and accordingly passed a decree in favour of the respondent for the amount awarded together with interest at the rate of six per cent from the date of decree. The appeal filed by the State was dismissed by the High Court. In this appeal it was contended on behalf of the State that the award was invalid because; (i) the arbitrator gave no reasons; (ii) no interest could be awarded by the arbi trator upto the date of award	 and the award being inclusive of interest was not severable. it was also contended that the High Court was wrong in assuming that the Trial Court was correct in refusing to call the arbitrator for being examined. Allowing the appeal partly	 HELD: 1. The absence of reasons in the award does not by itself result in its invalidity except where the giving of reasons by the 822 arbitrator for the award is the requirement of the arbitra tion agreement or the deed of submission or an order made by the Court or statute governing the arbitration. [823G H] Raipur Development Authority & Ors. vs M/s Chokhamal Contractors and Ors.	 [1989] 2 S.C.C. 721	 applied. Even though an arbitrator is a competent witness	 the Court must exercise the power of calling him as a witness cautiously and sparingly and not in a routine manner. When the Court is requested to call the arbitrator for examina tion as a witness it must be shown that there is some cogent ground for his examination within the permissible limits. [826D] In the instant case	 nothing has been shown to indicate that it was at all necessary to call the arbitrator as a witness to depose on any matter which could legitimately be examined by the Court in the proceedings. The High Court was	 therefore	 justified in refusing to call the arbitrator for examination. [826E] State of Orissa vs D.C. Routray	 A.I.R. 1983 Orissa 163	 approved. In cases wherein the reference to arbitrator was made prior to the commencement of the 	 on August 19	 1981 the arbitrator is not empowered to grant interest for the period either before the commencement of the proceedings or during the pendency of the arbitration. In the instant case	 the reference to arbitrator was made and even the award was given prior to the commencement of the . Therefore	 the arbitrator had no jurisdiction to grant any amount as interest for any period either upto the date of submission of the claim before him or pendente lite upto the date of the award. [827F G] Executive Engineer (Irrigation)	 Balimela & Ors. vs Abhaduta Jena & Ors.	 [1988] 1 SCC 418	 applied. Gujarat Water Supply and Sewerage Board vs Unique Erec tors (Gujarat) (P) Ltd. & Anr. 	 ; 	 held inapplicable. In the instant case	 the inclusion of the amount of interest in the lumpsam award by the arbitrator does not render the whole award 823 invalid since it is possible to sever the invalid part relating to interest. The balance amount of award remaining after deduction of interest would not be tainted with any invalidity	 and it would be just and proper to sustain the award to this extent only. The decree is	 therefore	 modi fied to this extent. [828E F; 829C]