Prayer: If I’m a Frequent Doubter, What Should I Do When Doubts Arise During Prayer?

Practical Laws of Islam as per the teachings of Imam Khamenei

Prayer: If I’m a Frequent Doubter, What Should I Do When Doubts Arise During Prayer?

English:

Question #516:

Knowing that those who doubt excessively are not to pay heed to their doubts, what are they to do if the doubts occur during prayer?

Answer #516:

They must posit the occurrence of the act which they doubt unless doing so would lead to the invalidation of their prayers, in which case they must hold the opposite to be true. There is no difference whether the doubt is with regard to the number of rak‘ahs, the words or acts of prayer.

-Imam Khamenei, Practical Laws of Islam, Importance and Conditions of Prayer