It was narrated from Ibn ‘Umar that the Prophet ﷺ said:
“Whatever is cut from an animal hen it is still alive, what is cut from it is Maitah (dead meat).”

حَدَّثَنَا يَعْقُوبُ بْنُ حُمَيْدِ بْنِ كَاسِبٍ، حَدَّثَنَا مَعْنُ بْنُ عِيسَى، عَنْ هِشَامِ بْنِ سَعْدٍ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنِ ابْنِ عُمَرَ، أَنَّ النَّبِيَّ ﷺ قَالَ " مَا قُطِعَ مِنَ الْبَهِيمَةِ وَهِيَ حَيَّةٌ فَمَا قُطِعَ مِنْهَا فَهُوَ مَيْتَةٌ " .