Riyad as-Salihin, Book 18, Hadith 1607 (In-Book) ⓘ

Ibn 'Abbas (May Allah be pleased with them) said: The Messenger of Allah saw an ass which had been branded on the face. He disapproved of it. Upon this Ibn 'Abbas (May Allah be pleased with them) said, "By Allah, I shall not brand (the animal) but on a part at a distance from the face." Ibn 'Abbas (May Allah be pleased with them) then commanded branding on the hips; he was the first person to brand the animals on hips.[Muslim].

وعن ابن عباس رضي الله عنهما قال‏:‏ رأى رسول الله صلى الله عليه وسلم حمارًا موسوم الوجه، فأنكر ذلك‏؟‏ فقال‏:‏ والله لا أسمه إلا أقصى شيء من الوجه، وأمر بحماره، فكوي في جاعرتيه، فهو أول من كوى الجاعرتين‏.‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏