"We would do that, but then we were prohibited from it, and we were ordered to put our hands on our knees."
Jami` at-Tirmidhi Book 2, Hadith 111
← Previous Hadith "Umar bin Al-Khattab said to us: 'The knees are the Sunnah for you, so hold the knees.'"

Jami` at-Tirmidhi Book 2, Hadith 110 Next Hadith → "Abu Humaid, Abu Usaid, Sahl bin Sa'd, and Muhammad bin Maslamah were once together and they were mentioning the Salat of Allah's Messenger. Abu Humaid said: 'I am the most knowledgeable among you of the Salat of Allah's Messenger: Allah's Messenger would bow and place his hands on his knees as if he was grasping them, and he would draw his forearms to hold them away from his sides.'"

Jami` at-Tirmidhi Book 2, Hadith 112