The Prophet (s) had also ordered that except Ali all the...
The Prophet (s) had also ordered that except Ali all the "Muhajirin” and "Ansar" must join the army of Usamah and go with him. Some companions became critical that the Holy Prophet had appointed a slave over the high ranking "Muhajirin and Ansar". So they indulged in open criticism about it. When this information reached the Holy Prophet (s) he felt greatly hurt, and in spite of fever came out of the house in a state of extreme displeasure and went upto the pulpit.
There he addressed the people, "O people! What are these talks that you are indulged in at Usamah's appointment as the commander of the army, just as you had done at the time of the Battle of Motah when Usamah's father was appointed the army commander. By Allah Usamah deserves command just as his father deserved to be the army commander".
It is in al-Milal wan Nahl by Shahristani and Hujajul Karamah by Siddiq Hasan that the Holy Prophet (s) asked the companions to make immediate preparations for the army of Usamah. Cursed be the man who opposes Usamah's army! According to Madarijun Nubuwwah Abu Bakr and Umar remained behind in Medina and Usamah despatched the army. When he was about to move, his mother informed him that the condition of the Prophet was not satisfactory. She advised him to come back and so he did.
According to Tarikhut Tabari in that condition the Prophet called for Ali. ‘Ayesha suggested him to call her father (Abu Bakr) instead, and Hafsa suggested the name of her father (Umar) in place of Ali. In the meantime these people gathered there. But the Prophet said, "You should go back. I will call you myself if I need you at all", Hearing this, those people went away.
In Sahih Muslim it is reported from Ibn Abbas that when the Holy Prophet was about to die on his death bed Umar ibn Khattab and other companions were present in the house of the Prophet. The Holy Prophet said, "Bring me a piece of paper and pen so that I may write something (as my will) for you lest you should be misled after me". Umar said, “The Prophet (s) is saying so because of delirium, we have the Holy Qur'an and that is sufficient for us".
At this there arose an altercation among those present there. Some said, "It is obligatory on us to obey his orders so that he may write whatever he likes for us". Some sided with Umar. When there, arose a great noise over this matter, the Prophet said, "Be off from me".