Ibn ‘Umar said God’s Messenger forbade that a man should sit during prayer leaning on his hand.
Ahmad and Abu Dawud transmitted it, and in a version by Abu Dawud it says he forbade that a man should lean on his hands when he got up during the prayer.
Wa’il b. Hujr said concerning God’s Messenger, “Then he sat, stretched out his left foot , placed his left hand on his left thigh, put the tip of his right elbow on his right thigh, joined two fingers, 1 formed a ring, 2 then raised his finger, 3 and I saw him moving it and making supplication at the same time.”
1. i.e the little finger and the ring finger.
2. i.e with the thumb and the middle finger.
3. i.e the forefinger.