Yahya related to me from Malik from Ibn Shihab from Salim ibnAbdullah that Abdullah ibn Umar used to say "Allah is greater" in theprayer whenever he lowered himself and raised himself.Yahyarelated to me from Malik from Nafi that Abdullah ibn Umar used toraise his hands to the level of his shoulders when he began the prayerand when he raised his head from the ruku he would raise them lessthan that.
App reference: Book 3, Hadith 21
USC-MSA web (English) reference: Book 3, Hadith 21
Arabic reference: Book 3, Hadith 167