It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) appointed Sayyiduna Usama (may Allah be pleased with him) as the leader of some people, but when people criticized his leadership, the Prophet (peace and blessings be upon him) said: If you criticize his leadership, then you must have also criticized his father's leadership. By Allah, he is indeed worthy of leadership.