Then he called all his wives at the residence of Maimunah...
Then he called all his wives at the residence of Maimunah, Mother of the Faithful, where he was staying at that time, requesting them to permit him to remain at the residence of any one particular wife from among them.
All of them allowed him to stay during the period of his illness at'Ayishah's." Ibn al-Wardi writes in his history that during his illness, the Prophet commissioned an army to be led by Usamah son of the late Zaid ibn Harithah to march to Mu'ta in order to avenge the death of his father. The Prophet insisted upon its immediate departure.
On the next day, in spite of his serious condition, the Prophet personally prepared a flag and handed it over to Usamah saying, "Go in the Name of Allah and fight the infidels in His Name." Usamah went out and handed over the standard to Buraidah ibn al-Khusaib whom he appointed as the army's standard-bearer. Having left Medina, he stopped at a village named Jarf which is close to Medina and the army gathered there.
The Prophet had also ordered that barring 'Ali, all other principal Immigrants and Helpers, including Abu Bakr, 'Umar, Uthman, Sa'ad ibn Abi Waqqas, Abu Ubaidah ibn al jarrah and others, should accompany Usamah. Some companions felt insulted at the Prophet's appointing the son of a freed slave to lead the senior Immigrants and Helpers, so they started grumbling and criticizing. When the news reached the Prophet, he felt dismayed.
Despite his fever and headache, he angrily came out of his residence, mounted the pulpit and declared: "O people! What is this you are saying on Usamah's appointment as the commander of the army? You talked in a similar manner when Usamah's father was commissioned to lead the army in the battle of Mu'ta. By Allah!, Usamah deserves to be a commander and his father also deserved the leadership of the army.
" The Farewell Pilgrimage Shahristani, in his book Kitabul Milal wan Nihal, and Nawwab Siddiq Hasan Khan in his book Hujajul Karamah, state that the Prophet ordered his companions thus: "Make haste in joining Usamah's legion. May Allah curse whoever fags behind Usamah's army." In Madarijun-Nubuwwah, the following is stated: "Then, in accordance with the orders of the Prophet, Usamah went to the camp and ordered the army to march.
When he was about to mount his steed, his mother informed him that the Prophet was in the agony of death. Receiving this news, Usamah and other companions went back.