It wasnarrated from Ibn 'Umar that the Prophet (ﷺ) said:
"Whateveriscut from an animal hen it is still alive, what is cut from it isMaitah (dead meat)." (PT)
English reference (PT): Vol. 4, Book 28, Hadith 3216 (PT)
Arabic reference (PT): Book 28, Hadith 3337 (PT)