Musannaf Ibn Abi Shayba 3:1282

Waki’ narrated to us, he said: Al-A’mash narrated to us, from Ibrahim, from Alqama, who said: I prayed beside Abdullah during the day, and I did not know what he recited until he reached His saying: "My Lord, increase me in knowledge." So I thought that he was reciting in [Surah] Taha.