question #1 Sahih al-Bukhari 1696, Book 25, Hadith 174 : What is the significance of garlanding and marking animals in the context of Hajj rituals?

I twisted with my own hands the garlands for the Budn of the Prophet (ﷺ) who garlanded and marked
them, and then made them proceed to Mecca; Yet no permissible thing was regarded as illegal for him
then.