question #3 Sahih al-Bukhari 7262, Book 95, Hadith 16 : What role did Abu Musa play in the event where the Prophet gave glad tidings of Paradise to certain individuals?

The Prophet (ﷺ) 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 (ﷺ) said, “Admit him and give him the good
news that he will enter Paradise.” Then `Uthman came and the Prophet (ﷺ) said, “Admit him and give him
the good news that he will enter Paradise. ”