"It was said that the subjects of the suit in this Court, and of the action at law, arise out of the same contract; but the one is for an account of transactions under the contract, and the other for damages for the breach of it. The object and subject-matters are, therefore, totally distinct; and the fact that the agreement was the origin of both does not form any bond of union for the purpose of supporting an injunction.
The question then comes to this: Is the Defendant, in a suit in this Court for an account, the balance of which I will suppose to be uncertain, to be restrained from taking out execution in an action for damages against the other party to the account until after the account shall have been taken, and it shall thereby have been ascertained that he does not owe to the Defendant at law, upon the balance of the account, a sum equal to the amount of the damages? If so, it cannot be open upon the ground of set-off, because there is not at present any balance against which the damages can be set off; nor can it be because the damages are involved in the account, for certainly they can form no part of it.
We speak familiarly of equitable set-off, as distinguished from the set-off at law; but it will be found that this equitable set-off exists in cases where the party seeking the benefit of it can shew some equitable ground for being protected against his adversary's demand. The mere existence of cross-demands is not sufficient; Whyte v O'Brien [(1824) [1824] EngR 258; 1 Sim & St 551; 57 ER 218]; although it is difficult to find any other ground for the order in William v Davies [(1829) [1825] EngR 587; 2 Sim 461; 57 ER 860], as reported. In the present case, there are not even cross-demands, as it cannot be assumed that the balance of the account will be found to be in favour of the Defendants at law. Is there, then, any equity in preventing a party who has recovered damages at law from receiving them, because he may be found to be indebted, upon the balance of an unsettled account, to the party against whom the damages have been recovered? Suppose the balance should be found to be due to the plaintiff at law, what compensation can be made to him for the injury he must have sustained by the delay? The jury assess the damages as the compensation due at the time of their verdict. Their verdict may be no compensation for the additional injury which the delay in payment may occasion. What equity have the Plaintiffs in the suit for an account to be protected against the damages awarded against them? If they have no such equity, there can be no good ground for the injunction."[14]