“When the Prophet (ﷺ)
stood up to offer a prescribed prayer, he said Allahu Akbar and
raised
his hands until they were parallel to his shoulders. When he
wanted to
bow he did likewise; when he raised his head from bowing he
did
likewise; and when he stood up after the two prostrations he did
likewise.”*
Sunan Ibn Majah Book 5, Hadith 62