If a butcher sells the meat of a male animal but gives the meat of a female animal instead, he will have sinned. Therefore, if he specifies the meat and says, ‘I am selling this meat of a male animal’ [but gives the meat of a female animal], the buyer can annul the transaction. However, if he does not specify it, then in case the buyer is not pleased with the meat he has received, the butcher must give him the meat of a male animal.