Narrated Abu Musa: The Prophet (peace be upon him) entered a garden and told me to guard its gate. Then a man came and asked permission to enter. The Prophet, said, “Permit him and give him the good news that he will enter Paradise.” Behold! It was Abu Bakr. Then `Umar came, and the Prophet (peace be upon him) said, “Admit him and give him the good news that he will enter Paradise.” Then `Uthman came and the Prophet (peace be upon him) said, “Admit him and give him the good news that he will enter Paradise.
Sahih al-Bukhari, Book 95, Hadith 16
