حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى، عَنْ حَنْظَلَةَ، عَنْ سَالِمٍ، عَنِ ابْنِ عُمَرَ، أَنَّهُ كَرِهَ أَنْ تُعْلَمَ الصُّورَةُ،‏.‏ وَقَالَ ابْنُ عُمَرَ نَهَى النَّبِيُّ صلى الله عليه وسلم أَنْ تُضْرَبَ‏.‏ تَابَعَهُ قُتَيْبَةُ حَدَّثَنَا الْعَنْقَزِيُّ عَنْ حَنْظَلَةَ وَقَالَ تُضْرَبُ الصُّورَةُ‏.‏
Translation
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.)