Musnad Ahmad 33:424

Yahya ibn Adam narrated to us, Hasan ibn Ayyash—the brother of Abu Bakr—narrated to us, from Ja’far ibn Muhammad, from his father, from Jabir, who said: "We used to pray the Friday prayer with the Prophet, may Allah bless him and grant him peace, then we would return and rest our camels." Hasan said: I said to Ja’far: "And when was that?" He said: "The declining of the sun."