Christian wife is
    insisting that her Muslim husband be buried in a Christian graveyard
Question

                Is it permissible for a muslim to burry
      another muslim in a christian graveyard because the wife of the deceased is a christian
      and is insisting on it? JazakUm Allah Khair
Praise be to Allah.We put this question to Shaykh Muhammad ibn Saalih
    al-‘Uthaymeen, who replied as follows:
It is not permitted, and this woman should not be listened to. He
    should not be buried anywhere except with the Muslims (in the Muslim graveyard).