What did the Prophet Muhammad (saw) say when he heard that `Abdur-Rahman bin `Auf had an agreement with Umaiya bin Khalaf (peace be upon him) regarding looking after their relatives and property?
 Narrated `Abdur-Rahman bin `Auf:                     "I had an agreement with Umaiya bin Khalaf (that he would look after my relatives and property in Mecca, and I would look after his relatives and property in Medina)." `Abdur-Rahman then mentioned the killing of Umaiya and his son on the day of Badr, and Bilal said, "Woe to me if Umaiya remains safe (i.e. alive) . "