Musannaf Ibn Abi Shayba 3:3133

Ali bin Mushir narrated to us, from al-Ajlah, from Abu Burdah, from Abu Musa, from Abu Hurairah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, there is an hour on Friday; no Muslim servant prays to Allah during it except that He answers him."