Summarize the following court judgment. ivil Appeal No. 4083 of 1986 110 From the judgment and order dated 13.4.1984 of the Andhra Pradesh High Court in C.R.P. No. 3072 of 1983. Dr. Y.S. Chitale	 G.N. Narayan and N. Nittar for the Appel lant. T.S. Krishnamurthy Iyer	 T.V.S.N. Chaff and Ms. V. Grover for the Respondent; The Order of the Court was delivered by PATHAK	 J. This appeal is directed against the judgment and order of the High Court of Andhra Pradesh disposing of a revision petition filed by the Appellant in execution pro ceedings. The Appellant is a contractor	 who entered into two agreements with the Government of the State of Andhra Pra desh for providing B.T. Macadam wearing coat and seal coat along two stretches of the Hyderabad Vijayawada National Highway. While the work was in progress	 the contractor made certain claims in respect of the loss suffered on account of delay	 escalation of rates and other heads. The claims were referred to arbitration. On September 4	 1979 the Arbitrator held the contractor entitled to a sum of Rs.99	00	000 under five heads of claim. The contractor applied to the Civil Court for making the award a rule of the Court while the State Government prayed for setting aside the entire award. The Civil Court set aside the award and refused to pass a decree in terms of the award. The contractor appealed to the High Court	 and on April 19	 1982 the High Court allowed the appeal to the extent of one of the claims only	 the claim being for loss of profit in the sum of Rs. 16	00	000 togeth er with interest. The appeal was dismissed in respect of the other heads of claim. For the realisation of the amount due under the decree the contractor filed Execution Petition No. 48 of 1982 before the V Additional Judge	 City Civil Court	 Hyderabad claiming recovery of Rs. 16	00	000 towards the decretal amount	 Rs.7	80	000 towards interest in terms of the award up to the date of the execution petition and Rs.8	691 to wards costs of the Execution Petition. The State Government filed objections	 contending inter alia that a sum of Rs.22	91	332 was recoverable by it from the contractor and claimed adjustment against the amount due to the contractor under the said decree. It urged that after adjusting the amount due to the State Government the balance payable to the contractor would stand reduced to Rs.76	667. This sum 111 together with the other deposits of the contractor with the Government and refundable to him	 viz. Rs.3	92	236 was deposited in the Executing Court. The contractor withdrew the amount without prejudice to his rights to contest the adjustment. The Executing Court held that the State Govern ment was entitled to set off the amounts claimed by it	 and accordingly adjourned the Execution Petition for further proceedings. The contractor filed a revision petition before the High Court and contended that the State Government was not enti tled to claim adjustment in execution proceedings. It was pointed out that the sum of Rs.22	91	332 of which adjustment was sought by the State Government against the amount for which the contractor had taken out execution	 consisted of (a) an amount of Rs.10	21	800 claimed by the State Govern ment as due to it upon the preparation of the final bill in respect of the contracts covered by the award and (b) an amount of Rs. 12	69	532 claimed by the State Government under a separate contract on the ground that the contractor had committed a breach of that contract. The contractor disputed both claims. He contended that the final bill in respect of the earlier contract had been prepared in his absence and that he challenged the inclusion of several items in that bill. In regard to the latter amount he urged that he was not guilty of any breach of contract. The High Court has found that so far as the first claim to adjustment was concerned the State Government was justi fied in making it because the arbitration was effected while the work was still in progress and the contract was in the process of execution by the contractor	 and having regard to clause 68 of the agreement final payment had to be made to the contractor after taking into account the amount which had been received by him earlier. The second claim to ad justment was made by the State Government under another contract	 and the High Court justified that claim by refer ence to clause 71 of that contract	 which permitted the Government to retain or deduct money due under the contract from an amount due to the contractor under any other con tract. However	 it held that the adjustments claimed by the State Government could not be made against the decretal amount but must await determination upon due arbitration. Learned counsel for the Appellant contends before us that the State Government is not entitled to a set off at all because	 he says	 a set off can be claimed only under Order 21 Rule 18 of the Code of Civil Procedure and that provision does not apply in terms to the present 112 case. Learned counsel for the respondent urges	 on the other hand	 that the power of the Court extends to granting an equitable set off in appropriate cases	 and the High Court was therefore justified in making the order which it did. We have no doubt that in certain cases the Court has the power to allow a set off even in cases which do not strictly fall within the terms of Order 21 Rule 18 of the Code. A Full Bench of the Andhra Pradesh High Court has discussed the matter in Bhoganadham Seshaiah vs Budhi Veerabhadrayya (died) and Others	 AIR [1972] Andhra Pradesh 134 and has examined at some length the circumstances in which such set off may be granted. The facts before us	 however	 call for a somewhat different consideration. So far as the first claim to adjustment is concerned	 the matter is covered by clause 68 of the contract. What was awarded to the contractor under the decree was an amount relating to a part only of the work entrusted to him. The contract was still in the process of execution. Any amount claimed by him for such work was subject to a final settlement of account on the preparation of the final bill. The right to payment depended on the terms of the contract. Any payment made while the contract was still being worked out was in the nature of a provision al payment. It was always subject to adjustment against amounts found due against the contractor on preparation of the final bill. Such adjustment was implied in the very terms of the contract. Therefore	 in regard to the adjust ment claimed by the State Government on the first count the High Court is right	 in our opinion	 in holding that the amount claimed by the State Government	 as determined on arbitration	 was entitled to a set off against the decretal amount claimed by the contractor	 and that payment of the decretal amount was to be subject to such adjustment. In regard to the claim to adjustment on the second count the position is more controversial. The claim is rounded in the doctrine of equitable set off	 but we do not find evi dence before us to bring the case within the operation of the doctrine. It is not a case where cross demands rise out of the same transaction or the demands are so connected in their nature and circumstances that they can be looked upon as part of one transaction. Nor can assistance be derived from clause 71. The benefit of that provision can be claimed only if the amount sought to be retained is an ascertained sum	 an amount which can be readily adjusted against the amount payable under the other contract. Here	 the amount sought to be adjusted has yet to be determined as a liabili ty against the contractor. It has been disputed by the appellant. Accordingly	 clause 71 cannot be invoked. In the result	 the decision 113 of me High Court in respect of the adjustment of Rs. 12	69	532 cannot be sustained. In the circumstances	 the appeal is allowed in part	 the judgment and order of the High Court is modified in so far that while the adjustment claimed by the State Government on the basis of the final bill relating to the contract covered by the award is maintained	 the direction in respect of the adjustment of the claim made under the other contract is set aside. The parties will bear their own costs. P.S.S. Appeal al lowed.

The appellant contractor entered into two agreements with the respondent State for carrying out certain road repairing works. Clause 68 of the agreement provided for preparation of the final bill of the contractor after taking into account amounts received by him earlier	 while clause 71 permitted the State to retain or deduct money due under the contract from an amount due to the contractor under any other contract. While the work was in progress the contrac tor made certain claims in respect of loss suffered on account of delay	 escalation of rates and other heads. The arbitrator held the contractor entitled to Rs.99 lacs. The civil court refused to pass a decree in terms of the award. The High Court on appeal allowed the claim to the extent of Rs.16 lacs together with interest. The contractor claimed recovery of decretal amount with interest in terms of the award and cost of execution proceedings. The respondent State contested the claim contending that a sum of Rs.22 lacs was recoverable from the appellant and claimed adjust ment against the amount due under the decree. The Executing Court held the respondent State entitled to set off. In the revision petition before the High Court it was contended for the appellant that the respondent State was not entitled to set off in execution proceedings	 and that the sum of which adjustment was sought consisted of (a) an amount claimed by respondent State as due to it upon prepa ration of the final bill in respect of the contracts covered by the award	 and (b) an amount claimed by the respondent State under a separate contract on the ground that the appellant had committed a breach of that contract. The High Court having regard to cl. 68 of the agreement found the respondent State entitled to set off so far as the first claim was concerned. It justified the second claim also by reference to cl. 71 of the contract but held that adjustment claimed could not be made against the decretal amount but must await determination upon the arbitration. 109 In this appeal by special leave it was contended that Order 21	 Rule 18 of the Code of Civil Procedure	 under which a set off can be claimed	 does not apply in terms to the present case. Allowing the appeal in part	 the Court	 HELD: 1. The Court has the power to allow a set off in certain circumstances even in cases which do not strictly fail within the terms of Order 21	 Rule 18 of the Code of Civil Procedure. [112B] Bhoganadham Seshaiah vs Budhi Veerabhadrayya (died) & Ors.	 AIR 1972 Andhra Pradesh 134	 approved. The respondent State 's claim to adjustment of the amount due to it upon the preparation of the final bill is covered by cl. 68 of the contract. What was awarded to the contractor under the decree was an amount relating to a part only of the work entrusted to him. The contract was still in the process of execution. Any amount claimed by him for such work was subject to a final settlement of account on the preparation of the final bill. The fight to payment depended on the terms of the contract. Any payment made while the contract was still being worked out was in the nature of a provisional payment. It was always subject to adjustment against amounts found due on preparation of the final bill. Such adjustment was implied in the very terms of the con tract. The High Court was	 therefore	 right in holding that the amount claimed by the State Government on this count was entitled to be set off against the decretal amount claimed by the contractor. [112C E] 3.1 The claim to adjustment of the amount claimed on breach of another contract is rounded in the doctrine of equitable set off but there is no evidence on record to bring the case within the operation of the doctrine. It is not a case where cross demands rise out of the same transac tion	 or the demands are so connected in their nature and circumstances that they can he looked upon as part of one transaction. [112F G] 3.2 The benefit of cl. 71 of the contract can be claimed only if the amount sought to. he retained is an ascertained sum	 an amount which can be readily adjusted against the amount payable under the other contract. In the instant case	 the amount sought to be adjusted had yet to be deter mined as a liability against the contractor. The decision of the High Court cannot	 therefore	 he sustained. [112GH	 113A]