Abu Dawud Book 21. Food Narated By Abdullah ibn Umar : The Prophet (pbuh) said: He who does not accept an invitation which he receives has disobeyed Allah and His Apostle of, and he who enters without invitation enters as a thief and goes out as a raider. Abu Dawud Book 021, Hadith Number 3732. Abu Dawud Book 21. Food Narated By Zubayr ibn Uthman : The Prophet (pbuh) said: The wedding feast on the first day is a duty, that on the second is a good practice, but that on the third day is to make men hear of it and show it to them. Qatadah said: A man told me that Sa'id ibn al-Musayyab was invited (to a wedding feast on the first day and he accepted it. He was again invited on the second day, and he accepted. When he was invited on the third day, he did not accept; he said: They are the people who make men hear of it and show it to them. Abu Dawud Book 021, Hadith Number 3736.