"When the Messenger of Allah (ﷺ) prostrated, he would hold his arms out to his sides, so that the whiteness of his armpits could be seen from behind. And when he sat he rested on his left thigh."
Sunan an-Nasa'i Book 12, Hadith 119
← Previous Hadith "Abdullah bin Tawus prayed beside me at Mina, in Masjid Al-Khaif, and when he made the first prostration he raised his head and raised his hands up to his face. I found that strange and I said to Wuhaib bin Khalid: "This man does something that I have never seen anyone do." Wuhaib said to him: 'You do something that I have never seen anyone do.' Abdullah bin Tawus said: 'I saw my father do it, and my father said: "I saw Ibn 'Abbas do it and 'Abullah bin Abbas said: 'I saw the Messenger of Allah (ﷺ) doing it.'"

Sunan an-Nasa'i Book 12, Hadith 118 Next Hadith → "In the prayer of the Messenger of Allah (ﷺ), his bowing, his prostration, standing after he raised his head from bowing and (sitting) between the two prostrations, were almost the same."

Sunan an-Nasa'i Book 12, Hadith 120