question #3 Sahih al-Bukhari 3762, Book 62, Hadith 107 : How did the companions of the Prophet identify individuals who embodied the Prophet’s characteristics?

We asked Hudhaifa to tell us of a person resembling (to some extent) the Prophet (ﷺ) in good appearance
and straight forward behavior so that we may learn from him (good manners and acceptable conduct).
Hudhaifa replied, “I do not know anybody resembling the Prophet (to some extent) in appearance and
conduct more than Ibn Um `Abd.