question #1 Sahih al-Bukhari 4917, Book 65, Hadith 437 : What is the significance of identifying individuals with notable signs in Islamic teachings?

(regarding the Verse):– ‘Cruel after all that, base-born (of illegitimate birth).’ (68.13) It was revealed
in connection with a man from Quaraish who had a notable sign (Zanamah) similar to the notable sign
which usually-hung on the neck of a sheep (to recognize it).