If a person severs the four ducts [as mentioned Ruling 2608] of a camel instead of performing naḥr [as described in the previous ruling], or if a person performs naḥr on a sheep, cow, or similar animal, then their meat is unlawful to eat and their body is impure (najis). However, if a person slaughters a camel according to Islamic law (dhabḥ) and before the camel dies he performs naḥr, its meat is lawful to eat and its body is pure.
Also, if naḥr is performed on a cow, sheep, or similar animal and before the animal dies a person severs the four ducts, its meat is lawful to eat and its body is pure.