Yahya related to me from Malik from Abu Hazim ibn Dinar that Sahl ibn Sad said, "People used to be ordered to place their right hands on their left forearms in the prayer."

Abu Hazim added, "I know for sure that Sahl traces that back to the Prophet, may Allah bless him and grant him peace."
Muwatta Malik Book 9, Hadith 54
← Previous Hadith 'As long as you do not feel ashamed, do whatever you wish', the placing of one hand on the other in prayer (one places the right hand on the left), being quick to break the fast, and delaying the meal before dawn."

Muwatta Malik Book 9, Hadith 53 Next Hadith → Yahya related to me from Malik from Nafi that Abdullah ibn Umar did not say qunut in any of the prayers.

Muwatta Malik Book 9, Hadith 55