“I heard him when he was among ten of the
Companions
of the Messenger of Allah (ﷺ), one of whom was Abu
Qatadah bin
Rib`i, saying: ‘I am the most knowledgeable of you
about the prayer of the Messenger
of Allah (ﷺ). When he stood up for prayer, he
stood up straight and
raised his hands until they were parallel to
his shoulders, then he
said: Allahu Akbar. When he wanted to bow in
Ruku`, he raised his
hands until they were parallel to his
shoulders. When he said Sami`
Allahu liman hamidah (Allah hears
those who praise Him), he raised his
hands and stood up straight.
When he stood up after two Rak`ah, he
said Allahu Akbar and raised
his hands until they were parallel to his
shoulders, as he did when
he started the prayer.’”
Sunan Ibn Majah Book 5, Hadith 60