"I heard Ibrahim (narrate) from 'Alqamah and Al-Aswad from 'Abdullah," and he narrated something similar.
Sunan an-Nasa'i Book 8, Hadith 33
← Previous Hadith "Alqamah and I entered upon 'Abdullah bin Mas'ud and he said to us: 'Have these people prayed?' We said: 'No.' He said: 'Get up and pray.' So we went to stand behind him, and he put one of us on his right and the other on his left, and he prayed with no Adhan and no Iqamah. When he bowed he interlaced his fingers and placed his hands between his knees, and he said: 'I saw the Messenger of Allah (ﷺ) doing that.'"

Sunan an-Nasa'i Book 8, Hadith 32 Next Hadith → It was narrated from 'Abbad bin Tamim, from his paternal uncle, that he saw the messenger of Allah (ﷺ) lying on his back in the Masjid, placing one leg on top of the other.

Sunan an-Nasa'i Book 8, Hadith 34