Sahih Bukhari

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)