 Sulaiman, Khalid's eldest son, was killed during the Muslim conquest of Egypt, although other sources claim he was slain during the Muslim siege of Diyarbakir in 639. Muhajir bin Khalid died in the Battle of Siffin while fighting from Caliph Ali's side and Abdulreman ibn Khalid remained Governor of Emesa during the time of third Caliph Uthman ibn Affan and participated in the Battle of Siffin as one of the generals of Muawiyah I, he was also the part of Umayyad army that besieged Constantinople in 664. Abdulreman ibn Khalid was later to be appointed the successor of Caliph Muawiyah but according to some narrations, he was poisoned by Muawiyah, because Muawiyah wanted to make his son Yazid I to be his successor. The male line of descent from Khalid is believed to have ended with his grandson, Khalid bin Abdur-Rahman bin Khalid.
