Sunan an-Nasa'i, 878

It was narrated from Abdullah bin Umar :that when the Messenger of Allah (ﷺ) started to pray, he would raise his hands in level with his shoulders, and when he bowed and when he raised his head from bowing, he would raise them likewise and say "Sami Allahu liman hamidah, Rabbana wa lakal-hamd (Allah hears those who praise Him, our Lord, to You be praise." And he did not do that when he prostrated)

Rapporté par Abdullah bin Umar : Quand le Messager d’Allah (ﷺ) commençait la prière, il levait les mains à la hauteur de ses épaules, et il faisait de même lorsqu’il s’inclinait et lorsqu’il relevait la tête de l’inclinaison, en disant : “Sami Allahu liman hamidah, Rabbana wa lakal-hamd (Allah entend celui qui Le loue, notre Seigneur, à Toi la louange).” Et il ne faisait pas cela lors de la prosternation