Narrated Salim
that Ibn `Umar disliked the branding of animals on the face. Ibn `Umar said, "The Prophet (ﷺ) forbade beating (animals) on the face."
Narrated Anas
I brought a brother of mine to the Prophet (ﷺ) to do Tahnik for him while the Prophet (ﷺ) was in a sheep fold of his, and I saw him branding a sheep. (The sub-narrator said: I think Anas said, branding it on the ear.)