Muhammad died on 8 June 632. Just before the death, there were a group of companions of Muhammad were near him when Muhammad asks that he want to write a will and hence require a pen and paper. Umar said that Muhammad is seriously ill and his brain is not working fully. Abu bakar also agreed on that. When Muhammad heard that, he ordered both to leave the room. Umar was full of grief upon hearing the news, Umar, the devoted disciple, could not accept the reality that the "Messenger of God" has died. According to the Qur'an, "Muhammad is but a messenger; messengers have passed away before", i.e. died or killed. It is said that Umar promised to strike the head of any man who would say that Muhammad died. At this point Abu Bakr is reported to have come out to the Muslim community and gave his famous speech which included:

"Whoever worshipped Muhammad, let them know that Muhammad is dead, and whoever worshipped God, let them know that God is alive and never dies."

Abū Bakr then recited these verses from the Qur'an:

"Muhammad is but a messenger; messengers (the like of whom) have passed away before him. If, then, he dies or is killed, will you turn back on your heel?".

Hearing this from Abu Bakr, the most senior disciple of Muhammad, Umar then fell down on his knees in great sense of sorrow and acceptance of the reality. Sunni Muslims say that this denial of Muhammad's death was occasioned by his deep love for him.

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