Abu Dawud

Narrated Wail ibn Hujr: I said that I should look at the prayer of the Messenger of Allah ﷺ how he prays. The Messenger of Allah ﷺ stood up and faced the qiblah (i. e. the direction of Kabah) and uttered the takbir (Allah is most great); then he raised his hands till he brought them in front of his ears; then he caught hold of his left hand with his right hand (i. e. folded his hands). When he was about to bow, he raised them (his hands) in a like manner. Then he sat, stretched out his left foot (to sit on it), placed his left hand on his left thigh, and kept away the tip of his right elbow from his right thigh, joined two fingers, formed a ring, to do so. And the narrator Bishr made a ring with the thumb and the middle finger.

Abdullah bin Umar said: "A Sunnah of the prayer is that you should raise your right foot, and make your left foot lie (on the ground). "

(There is another chain) reported from Yahya who said: "I heard Al-Qasim saying: "Abdullah bin Abdullah informed me that he heard Abdullah bin Umar saying: "From the Sunnah of the prayer is to lay your left foot on the ground, and raise your right foot. "

(There is another chain) from Yahya with his chain and similar (to the previous hadith). Abu Dawud said: Hammad bin Zaid also said (the wording): "From the Sunnah" (narrating) from Yahya just as Jarir did.

(There is another chain) from Yahya bin Sa'eed that Al-Qasim bin Muhammad saw them sitting in Tashah-hud, so he mentioned the Hadith.

It was reported from Ibrahim that he said: "When the Prophet ﷺ would sit in the prayer, he would place his left foot horizontally - so much so that the upper-part of his foot became black. "