What is the ruling on one who is accustomed to the opening supplication, then forgets it in some prayers, and then remembers it after he has concluded the prayer? Does he have to perform the prostration of forgetfulness?

The questioner : Shaykh, I have a few questions. May Allah reward you with good.

The Shaykh: Go ahead.

The questioner : Regarding the person, Shaykh, who is consistent in reciting the opening supplication in prayer, then forgets it one day and remembers it after he has concluded the prayer? What is required of him?

The Shaykh : Pardon me, consistent in what?

The questioner : Consistent in the opening supplication in prayer?

The Shaykh : The opening supplication?

The questioner : Yes, Shaykh.

The Shaykh : Then he forgot it one day?

The questioner : Yes, Shaykh.

The Shaykh : He has to perform the two prostrations of forgetfulness.

The questioner : May Allah reward you.