Musannaf Ibn Abi Shayba 3:5703

Waki’ narrated to us, he said: Sharik narrated to us, from Abu Fazara al-‘Absi, from Maymun ibn Mihran, who said: I said to ‘Abdullah ibn ‘Umar, "Who was the first to call it [the prayer] al-‘Atamah?" He said, "Satan."