Musnad Ahmad 775:11

Yahya narrated to us, from Shu'bah, from 'Amr ibn Murrah, who said: I heard 'Abdullah ibn Abi Awfa say: When a people would bring their charity to the Prophet, may Allah bless him and grant him peace, he would pray for them. My father brought his charity to him, and he said: "O Allah, bless the family of Abi Awfa."