Musannaf Ibn Abi Shayba 2:167

Waki’ narrated to us, from Abu ‘Asim al-Thaqafi, who said: ‘Ata’ narrated to us, who said: I entered with ‘Ali ibn al-Husayn upon Jabir ibn ‘Abd Allah. He said: Then the prayer time arrived, so he (Jabir) performed the Adhan and the Iqamah.