Muhammad.com collection in 109 languages

The last illness of the Prophet, praise and veneration be upon him:
Each year on the anniversary of the attempt to poison the Prophet, praise
and veneration be upon him, he would suffer from its recurring effect and
its time had come around once again.

It was either the morning after his visit to the cemetery or a morning shortly
thereafter, that the Prophet experienced an intense headache, the like of
which he had never experienced before. Despite his headache, he went to
the Mosque to lead the congregation in the dawn prayer, then climbed the
pulpit to supplicate for blessings upon those martyred at Uhud. Then he
said: "There is a worshiper among the worshipers of Allah to whom Allah
has given the choice between this world and that which is with Him. The
worshiper has chosen that which is with Allah." Abu Bakr, who was in the
congregation, was deeply affected by the Prophet's remark and began to
weep. He knew that the worshiper the Prophet referred to was none other
than Prophet Muhammad, praise and veneration be upon him, and that he
would not be with them for much longer.