A question: If they did not waive it at the time of the contract, then after ten minutes one says, “So-and-so, let us terminate the option,” because he fears that his counterpart may rescind the sale, and they both terminate it, this is valid, because the right belongs to them both and they have waived it. But if one of them refuses, it is not valid. Yet does the option of the other party—the one who said, “Let us waive the option”—also lapse?
The answer: The hadith states, “or one of them gives the other the choice” (1). Thus, if one of them gives the other the choice—meaning, he makes the option exclusively the other’s—then the option of the one who waived his own option lapses. Apparently, merely requesting that the option be waived does not itself constitute a waiver of the option.
A question: If a person fears that the sale may be rescinded, is it permissible for him to leave his counterpart for fear that he may ask him to cancel the sale?
The answer: By leaving the place, he is nullifying his brother’s right, which the Sacred Law has granted him. This is like resorting to a legal device to nullify the right of pre-emption in the share that has been sold, and similar cases. In any event, it is a legal device to nullify his brother’s right.
If someone were to say: The hadith is general: “unless they separate,” and it makes no distinction.
We would reply: What is meant is a separation not intended to nullify the other party’s right. But if it is intended to nullify the other party’s right, then deeds are judged by intentions. For this reason, the hadith states: “It is not lawful for him to leave the other for fear that he may ask him to cancel the sale” (2).