In Muslim tradition the Quran is the final revelation from God, Islam's divine text, delivered to the Islamic prophet Muhammad through the angel Jibril (Gabriel). Muhammad's revelations were said to have been recorded orally and in writing, through Muhammad and his followers up until his death in 632 CE. These revelations were then compiled by first caliph Abu Bakr and codified during the reign of the third caliph Uthman (r. 644–656 CE) so that the standard codex edition of the Quran or Muṣḥaf was completed around 650 CE, according to Muslim scholars. This has been critiqued by some western scholarship, suggesting the Quran was canonized at a later date, based on the dating of classical Islamic narratives, i.e. hadiths, which were written 150–200 years after the death of Muhammad, and part