Abu Huraira reported God's Messenger as saying, “The invitations of two people who are rivalling one another should not be accepted, and the food they provide should not be eaten.” The imam Ahmad said it means two people who are competing with one another in providing a feast out of self-glory and ostentation.
Ibn Mas'ud reported God’s Messenger as saying, “The food on the first day is a duty, that on the second is a sunna, but that on the third day is to make men hear of it; and if anyone makes men hear of what he does God will make him heard of” (i.e. will publish his hypocrisy on the day of resurrection).
