Muwatta Imam Malik Book of Hajj, Hadith 173

Yahya related to me from Malik that he had heard one of the people of knowledge say, "A man and wife should not share in one sacrificial animal. Each should sacrifice an animal separately."
Malik was asked about whether someone who had been entrusted with an animal for him to sacrifice on hajj, who went into ihram for umra, should sacrifice it when he came out of ihram or postpone it so that he sacrificed it at the time of the hajj while in the meantime he came out of ihram from his umra. He said, "He should postpone it so that he may sacrifice it at the time of the hajj, and meanwhile come out of ihram from his umra."
Malik said, "If it is judged that some- one must offer an animal for having killed game, or for any other reason, this animal can only be sacrificed at Makka, since Allah, the Blessed and Exalted, says, 'a sacrificial animal which will reach the Kaba.' The fasting or sadaqa that is considered equivalent to offering a sacrifice can be done outside Makka, and the person who is doing it can do it wherever he likes."