Musnad Ahmad 30:2116

Musa ibn Dawud narrated to us, he said: Ibn Lahi'ah informed us, from Abu al-Zubayr, from Jabir, that he said: And Abu Hurayrah said: I heard the Prophet, peace and blessings of Allah be upon him, saying: "In the day of Friday, there is an hour; no Muslim servant coincides with it while praying except that he is answered."