Musnad Ahmad 775:22

'Affan narrated to us, Shu'bah narrated to us, he said: 'Amr ibn Murrah informed me, he said: I heard 'Abdullah ibn Abi Awfa—and he was one of the Companions of the Tree—say: When a man would bring his charity to the Prophet, may Allah bless him and grant him peace, he would say: "O Allah, send blessings upon the family of so-and-so." He said: So my father brought him his charity, and he said: "O Allah, send blessings upon the family of Abi Awfa."