Sunan an-Nasa'i 1038
سنن النسائي#1038SahihIt was narrated that Salim Al- Barrad said:"Abu Mus'ad said: 'Shall I not show you how the Messenger of Allah (ﷺ) prayed?' We said: 'Yes.' So he stood up and said the takbir, and when he bowed, he held his arms out from his sides until, when every part of him settled, he raised his head. He prayed four rak'ahs like that, and said: 'This is how I saw the Messenger of Allah (ﷺ) praying
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih Lighairihi
Al-AlbaniSahih Lighairihi
Zubair Ali ZaiHasan
In-book reference: 12:10