Majma al-Zawaid 3113 — The time of the Friday prayer

It is reported about Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him); the narrator says: Once, on a Friday, we were with him in the mosque of Kufah. Sayyiduna Ammar bin Yasir was the governor of Kufah, appointed by Sayyiduna Umar bin al-Khattab, and Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) was in charge of the public treasury (bayt al-mal). Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) looked at the shadow and saw that it had become the length of a sandal strap, so he said: "If this (governor) of yours follows the Sunnah of your Prophet, he will come out now (for the Friday prayer)." The narrator says: By Allah, Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) had not yet finished speaking when Sayyiduna Ammar bin Yasir came out, saying: "The prayer!"
Ahmad recorded it; its chain contains a man who is not named.