It was narrated from Hudhaifah that:
He prayed with the Messenger of Allah during Ramadan. He bowed and said: Subhana Rabbiyal-Azim while bowing, for as long as he had stood. Then he sat down and said: Rabbighfirli, Rabbighfirli (Lord forgive me, Lord forgive me), for as long as he had stood. Then he prostrated and said: Subhana Rabbiyal-'Ala for as long as he had stood And he prayed no more than four rak'ahs when Bilal came for Al-Ghadah.