Blessed and Exalted is He. Yet this does not rule out that the Prophet was certain he was among the people of Paradise, even though he did not know the detailed events that would befall him in this world—its trials, deeds, the successive rulings that would be revealed to him—nor the precise forms of bliss with which he would be honored in the Hereafter. It is authentically reported in the Sahih that the Prophet—may Allah bless him and grant him peace—said:
“Allah, Exalted is He, says: ‘I have prepared for My righteous servants what no eye has ever seen, no ear has ever heard, and no human heart has ever conceived.’”
Similar wording is also transmitted from other prophets, peace be upon them.
Furthermore, it is not a condition of prophethood that a prophet know the exact condition of those he addresses—who will believe, who will disbelieve, and the detailed fate awaiting each of them. This remains the case if one holds that, subsequent to the verse just cited, he still did not know what it negated. And even if one says that he was later informed of it, it is well-known that Allah did not reveal everything to him in one single disclosure; rather, He acquainted him with matters gradually, one after another.
After that He said to him: