Doubt Regarding the Number of Prostrations for Forgetfulness

The questioner:
May Allah reward you, Your Eminence, father. The questioner says: If a person praying forgets whether he prostrated for forgetfulness once or twice, what should he do? He says: If a person praying forgets whether he prostrated for forgetfulness once or twice, what does he do in that case?

The Shaykh:
He prostrates twice. If he doubts whether he prostrated once or twice, he builds upon certainty, counting it as one prostration and making up the second. Then, when he concludes the prayer, he prostrates for forgetfulness. He builds upon certainty and prostrates for forgetfulness when he concludes the prayer.

The questioner:
(peace and blessings be upon him). He says, in the continuation of his question: If the person praying prostrates for forgetfulness and then proceeds to the tashahhud while forgetting, does he prostrate for forgetfulness again?

The Shaykh:
No. There is never two prostrations for forgetfulness in one prayer; one prostration for forgetfulness is sufficient. Yes.