question #1 Sahih al-Bukhari 7187, Book 93, Hadith 49 : What can be learned about the Prophet’s (ﷺ) criteria for leadership and his personal preferences?

Allah’s Messenger (ﷺ) sent an army unit headed by Usama bin Zaid and the people criticized his leadership.
The Prophet (ﷺ) said (to the people), “If you are criticizing his leadership now, then you used to criticize
his father’s leadership before. By Allah, he (Usama’s father) deserved the leadership and used to be
one of the most beloved persons to me, and now his son (Usama) is one of the most beloved persons
to me after him. ” (See Hadith No. 745, Vol. 5)