It wasnarrated that Najiyah Al-Khuza'i – in his narration, 'Amr (oneof the narrators) said that he was the one who looked after thesacrificial animals of the Prophet (ﷺ) – said:
"I said: 'OMessengerof Allah, what should I do with those sacrificial animalsthat becomeunfit?' He said: 'Slaughter them, dip its sandal inits blood, thenplace it on its side, and leave them for the peopleto eat.'" (FR)
English reference (FR): Vol. 4, Book 25, Hadith 3106 (FR)
Arabic reference (FR): Book 25, Hadith 3225 (FR)