Musannaf Ibn Abi Shayba 3:4012

Waki’ narrated to us, he said: Sufyan narrated to us, from Hammad, from Ibrahim, he said: Abdullah said: What is the matter with a man, when he prays two rak'ahs, he rolls about just as a beast or a donkey rolls about? If he performs the taslim, he should sit and pray.