We went to Messenger of Allah ﷺ as he was in the fold and he was cauterising the animals of the flock and I think (he was cauterising them) on their ears. This hadith has been narrated on the authority of Shu'ba through another chain of transmitters.
سَمِعْتُ أَنَسًا يَقُولُ دَخَلْنَا عَلَى رَسُولِ اللَّهِ ﷺ مِرْبَدًا وَهُوَ يَسِمُ غَنَمًا قَالَ أَحْسِبُهُ قَالَ فِي آذَانِهَا وَحَدَّثَنِيهِ يَحْيَى بْنُ حَبِيبٍ حَدَّثَنَا خَالِدُ بْنُ الْحَارِثِ ح وَحَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ حَدَّثَنَا مُحَمَّدٌ وَيَحْيَى وَعَبْدُ الرَّحْمَنِ كُلُّهُمْ عَنْ شُعْبَةَ بِهَذَا الإِسْنَادِ مِثْلَهُ