What message was the Prophet Muhammad (saw) sending by saying, "O Allah! Bestow Your Blessing upon the family of so-and-so" whenever someone brought their alms?
 Narrated Ibn Abi `Aufa:                     Whenever a man brought his alms to the Prophet, the Prophet would say, "O Allah! Bestow Your Blessing upon the family of so-and-so." When my father came to him (with his alms), he said, "O Allah! Bestow Your Blessings upon the family of Abi `Aufa."