Musnad Ahmad 652:97

Muhammad ibn Ja‘far narrated to us, Shu‘bah narrated to us, and Hajjaj narrated to us, Shu‘bah informed us, from ‘Asim al-Ahwal, from Abu Qilabah, from al-Nu‘man ibn Bashir, who said: "The sun eclipsed during the time of the Messenger of Allah, may Allah bless him and grant him peace, so he prayed. And the Messenger of Allah, may Allah bless him and grant him peace, would bow and prostrate." Hajjaj said: "Like our prayer."