´It was narrated from Hudhaifah bin Al-Yaman that he heard the Messenger of Allah (ﷺ) say when he bowed:` “Subhana Rabbiyal-‘Azim (Glory is to my Lord, the Most Great)” three times, and when he prostrated he said: “Subhana Rabbiyal-A’la (Glory is to my Lord the Most High)” three times.
Hadith Referenceسنن ابن ماجه / كتاب إقامة الصلاة والسنة / 888
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:ضعيف, إسناده ضعيف, ابن لھيعة ضعيف لإختلاطه يدلس, وأبو الأزھر المصري: مستور, انوار الصحيفه، صفحه نمبر 409