injury which he has sustained. But, and this is most important to note, he does not get damages or compensation by reason of any existing obligation on the part of the person who has committed the breach. He gets compensation as a result of the fiat of the court. Therefore, no pecuniary liability arises till the court has determined that the party complaining of the breach is entitled to damages. Therefore, when damages are assessed, it would not be true to say that what the court is doing is ascertaining a pecuniary liability which already existed. The court in the first place must decide that the defendant is liable and then it proceeds to assess what that liability is. But till that determination there is no liability at all upon the defendant. This statement in our view represents the correct legal position and has our full concurrence. A claim for damages for breach of contract is, therefore, not a claim for a sum presently due and payable and the purchaser is not entitled, in exercise of the right conferred upon it under Clause 18, to recover the amount of such claim by appropriating other sums due to the contractor. On this view, it is not necessary for us to consider the other contention raised on behalf of the respondent, namely, that on a proper construction of Clause 18, the purchaser is entitled to exercise the right conferred under that clause only where the claim for payment of a sum of money is either admitted by the contractor, or in case of dispute, adjudicated upon by a court or other adjudicatory authority. We must,
