What is the criterion for the obligation of sacrificing an animal for one who performs Hajj as a mutamatti'?

Question:
He says: He performed 'Umrah for his father last Shawwal, and he will perform Hajj for himself this year, if Allah wills. Some people told him that he has to sacrifice an animal, while others told him that he does not have to sacrifice an animal. What is the ruling in this matter?

Answer:
If you perform 'Umrah for your father in Shawwal, or in Dhul-Qa'dah, or for a non-heir among the deceased, and then you perform Hajj, you have to sacrifice an animal; because you become a mutamatti'. It is the same whether the Hajj is for you and the 'Umrah is for someone else, or the 'Umrah is for you and the Hajj is for someone else; it is all the same. Or if both the Hajj and the 'Umrah are for you, you are a mutamatti', so you have to offer the sacrificial animal. However, if you go back to your family after the 'Umrah—you go to your country—and then you come to perform an ifrad Hajj, the majority of scholars hold that you owe nothing. It was reported from 'Umar and his son that if a mutamatti' returns to his family and then comes to perform an ifrad Hajj, he owes nothing. It was also reported from Ibn 'Abbas (may Allah be pleased with them both) that he has to offer the sacrificial animal even if he returns to his family, and this is the well-known position of Ibn 'Abbas. If you offer the sacrificial animal, even if you return to your family, that is more cautious and better. The majority hold that it is not obligatory for him if he returns to his family.