One who makes a mistake in the number of prostrations: Is it obligatory for him to repeat the prayer?

A listener from Khamis Mushayt (M. A.) asks and says: I often make mistakes, especially regarding the number of prostrations. Is it obligatory for me to repeat the prayer, or is the prostration for forgetfulness sufficient? And if I am required to repeat the prayer, I do not remember the number, so how do you guide me?
Answer: It is not obligatory for you to repeat the prayer, but you must build upon certainty. If you doubt whether you prostrated once or twice, you assume it was once, then you perform the second prostration. You then prostrate for forgetfulness after completing the prayer, before you say the closing salam, for the forgetfulness in any of the rak'ahs, whether in the first, second, or third rak'ah of the three-rak'ah prayer or the four-rak'ah prayer, or in the fourth rak'ah of the four-rak'ah prayer. Whenever the doubt occurs as to whether you prostrated once or twice, the original state is that the second prostration did not occur. You build upon certainty and prostrate for the second one, then when you are finished and before the salam, you prostrate two prostrations for forgetfulness. Yes.
The presenter: May Allah reward you with good and do you good.