Acting Upon the Stipulations
Issue No. 1222- If it is agreed with the hired person that he will perform the qaḍā of prayer and fast in a particular manner, (for example, it is agreed that he should offer the prayer in the mosque or at a special time), the hired person should follow the agreement. However, if nothing has been agreed, then he can perform according to his own obligation and as usual. As for performing the mustaḥab acts, he should perform the mustaḥab acts that are usually performed and it is not necessary to offer more than that, unless it has been stipulated. It is also not necessary to offer āyāt Prayer either, unless it has been agreed and stipulated before.