Issue 605: To offer the Quadha of a forgotten prostration or testimony after the prayers, one must observe all the rules and conditions of prayers such as the purity of the body and covering, facing the Quiblah etc.

Issue 606: If a person forgets to perform prostrations more than once in a prayer, for example, if they forget to prostrate once in the first Rak'at and once in the second Rak'at, they must perform the Quadha of both of them as well as the corresponding Sahv prostrations after the prayer, and it is not necessary to determine the correspondence between the forgotten prostrations and the ones they perform as Quadha or Sahv (i.e. which is for which).

Issue 607: If a person doubts whether they have performed the Quadha of a forgotten prostration or testimony after their prayers, they must perform it if the time for that prayer has not passed yet; and as a recommended precaution, they must do the same when the time for that prayer has passed.