(9) باب الذِّكْرِ فِي الرُّكُوعِ
It was narrated that Hudhaifah said:
"I prayed with the Messenger of Allah (ﷺ), and he bowed and said when bowing: 'Subhana Rabbial-azim (Glory be to my Lord Almighty).' And when prostrating: 'Subhana Rabbial-'Ala (Glory be to my Lord Most High).'"
Reference: Sunan an-Nasa'i 1046
In-book reference: Book 12, Hadith 18
English translation: Vol. 2, Book 12, Hadith 1047