 An-Nasir Muhammad died in 1341 and his rule was followed by a succession of his descendants to the throne in a period marked by political instability.Most of his successors, except for an-Nasir Hasan (r. 1347–1351, 1354–1361) and al-Ashraf Sha'ban (r. 1363–1367), were sultans in name only, with the patrons of the leading mamluk factions holding actual power.The first of an-Nasir Muhammad's son to accede to the sultanate was Abu Bakr, who an-Nasir Muhammad designated as his successor before his death.