Yahya related to me from Malik from Ibn Shihab that AIi ibnHusayn ibn Ali ibn Abi Talib said, "The Messenger of Allah, may Allahbless him and grant him peace, used to say, 'Allah is greater'whenever he lowered himself and raised himself, and he continued topray like that until he met Al lah ."
App reference: Book 3, Hadith 18
USC-MSA web (English) reference: Book 3, Hadith 18
Arabic reference: Book 3, Hadith 164