Musannaf Ibn Abi Shaybah 3259 — All the prayer times

Bashir bin Sallam said: Muhammad bin Ali (or a man from the family of Ali) and I went to Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) and said: "Teach us how the prayer was with the Messenger of Allah (peace and blessings be upon him)." He said: The Messenger of Allah (peace and blessings be upon him) prayed Zuhr when the shadow of everything was equal to a sandal strap. Then he led us in Asr when the shadow of everything was equal to its own length plus the length of a sandal strap. Then he led us in Maghrib when the sun had set. Then he led us in Isha when the twilight had disappeared. Then he led us in Fajr when dawn had broken. Then on the next day he led us in Zuhr when the shadow of everything was equal to its own length. Then he led us in Asr when the shadow of everything was twice its length; he led us in this prayer early enough that a rider travelling at a brisk pace could reach Dhul-Hulayfah before Maghrib. Then he led us in Maghrib when the sun had set. Then he led us in Isha when a third of the night had passed. Then he led us in Fajr in the light.
We asked him: "How should we pray with al-Hajjaj (bin Yusuf), when he delays the prayer?" He said: "Whatever prayer he performs on time, pray it with him; and whatever prayer he delays, pray it yourselves in its time and join him with the intention of a voluntary prayer. This statement of mine is a trust with you. When I die, if al-Hajjaj is able to dig up my grave, let him dig it up."