The ruling on one who says: Allahu Akbar, when rising from the bowing

Question:
A man prayed in congregation, and while rising from the bowing, he did not say: "Allah hears the one who praises Him," but rather said: "Allahu Akbar." Is there anything required of him for that?

Answer:
He is one who forgot, so he must perform the prostration for forgetfulness, and his prayer is valid. If he said "Allahu Akbar" instead of "Allah hears the one who praises Him," or if he said "Our Lord, to You belongs all praise," and he is the imam, some scholars considered this a mistake of forgetfulness, so he prostrates for forgetfulness two prostrations before the closing salam.
And the majority said: there is nothing required of him. Most scholars say: there is nothing required of him; because in their view, it is not obligatory. However, the correct view is that it is obligatory. Saying "Allah hears the one who praises Him" is obligatory, and so is saying "Our Lord, to You belongs all praise," and so are the other takbirs after the takbir of intention. The correct view is that they are obligatory. If he left them out due to forgetfulness, the prostration for forgetfulness makes up for it, and that is sufficient...