"By Allah, though I am the Apostle of Allah, yet I do not know what Allah will do to me." (Hadith Sahih al-Bukhari, Volume 5, Book 58, Number 266)
Muhammad conquered the Jewish city of Khaybar in 628 AD.
He beheaded the city's chief and took his wife, Safiyah, to be one of his wives.
A few years later, Safiyah poisoned Mohammed:
"Narrated Anas bin Malik: A Jewess brought a poisoned (cooked) sheep for the Prophet who ate from it.
She was brought to the Prophet and he was asked, 'Shall we kill her?' He said, 'No.' I continued to see the effect of the poison on the palate of the mouth of Allah's Apostle. (Sahih Bukhari 3:47:786)
"The Apostle of Allah sent for Zaynab and said to her,
'What induced you to do what you have done?'
She replied, 'You have done to my people what you have done. You have killed my father, my uncle and my husband, so I said to myself, If you are a prophet, the foreleg will inform you; and others have said, If you are a king we will get rid of you.'" (Ibn Sa'd, p. 252)
Mohammed was with his favorite wife, Aisha, when he died.
"Narrated 'Aisha: The Prophet in his ailment in which he died, used to say, 'O 'Aisha! I still feel the pain caused by the food I ate at Khaibar, and at this time, I feel as if my aorta is being cut from that poison.'" (Sahih Bukhari 5:59:713)
Narrated 'Aisha: that during his fatal ailment, Allah's Apostle, used to ask his wives, "Where shall I stay tomorrow? Where shall I stay tomorrow?" He was looking forward to Aisha's turn. So all his wives allowed him to stay where he wished ... (Sahih Bukhari 7:62:144)
... He came out with the help of two men and his legs were dragging on the ground. He was between Al-Abbas and another man [Ali Ibn Abi Talib]" ... (Sahih Bukhari 1:11:634)
Narrated 'Aisha and Ibn 'Abbas: On his death-bed Allah's Apostle put a sheet over his-face and when he felt hot, he would remove it from his face. (Sahih Bukhari 4:56:660)
'Aisha added: He died on the day of my usual turn at my house ... (Sahih Bukhari 7:62:144)