Sahih Muslim 2119
Sahih Muslim · Book 37: The Book of Clothes and Adornment · The Permissibility Of Branding Animals Anywhere But On The Face, And This Is Recommended In The Case Of Animals Given As Zakat Ot Jizyah
Anas b. Malik reported:
حَدَّثَنَا هَارُونُ بْنُ مَعْرُوفٍ ، حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ ، عَنِ الأَوْزَاعِيِّ ، عَنْ إِسْحَاقَ، بْنِ عَبْدِ اللَّهِ بْنِ أَبِي طَلْحَةَ عَنْ أَنَسِ بْنِ مَالِكٍ ، قَالَ رَأَيْتُ فِي يَدِ رَسُولِ اللَّهِ صلى الله عليه وسلم الْمِيسَمَ وَهُوَ يَسِمُ إِبِلَ الصَّدَقَةِ .
I saw in the hand of Allah's Messenger (ﷺ) an instrument for cauterisation and he was cauterising the caracia collected as Zakat.