Compilation of the reports on how the caliphate was conferred upon ʿUmar ibn al-Khaṭṭāb, Amīr al-Muʾminīn (Commander of the Believers), when Abū Bakr al-Ṣiddīq (may Allah be pleased with him)—the Caliph succeeding the Messenger of Allah (Allah bless him and grant him peace)—designated him as his successor.