Musannaf Ibn Abi Shaybah 33951 — What Allah the Exalted gave Muhammad

Sayyiduna Abu Talhah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) came one day with signs of joy visible on his face. The Companions said: "O Messenger of Allah, we see joy on your face." He said: "An angel came to me and said: 'O Muhammad, are you not pleased that whoever of your Ummah sends blessings upon you once, I will send mercy upon him ten times, and whoever sends greetings of peace upon you once, I will send greetings of peace upon him ten times?'" He said: "Certainly!"