Arabic (خيار التروي) for one of khiyarat (plural of khiyar)- in English options to reconsider– that gives a party (to a commutative contract, aqd al-muawadhah) or more the right to cool off, select a course of action, or revoke the contract due to incomplete performance or breach of trust. Respectively, these are rights or options are termed: cooling-off option, either-or option, or options to revoke.

For example, either-or option, i.e., khiyar al-tayeen (خيار التعيين) gives the buyer (in a contract of sale, aqd al-ba’i) the right to proceed with the contract by purchasing one item or more out of a number of items specified in the contract during a specific period of time as stipulated by the parties. If the buyer takes delivery of all the items, then only selects a few number of them, he/ she will be liable to pay for the selected items while holding the remaining ones on trust.