Burying
      a kaafir in the Muslim graveyard
Question

                Is
      it permissible to bury a kaafir child in the Muslim graveyard if a Muslim
      has taken him to adopt him, then he dies before reaching the age of
      adolescence?
Praise be to Allah.It
      is not permissible to bury a kaafir in the Muslim graveyard, regardless of
      whether he was adopted by a Muslim or not, or whether he had reached the
      age of adolescence or not. But if there was any indication that he was
      Muslim (or that he had become Muslim), then he may be buried in the Muslim
      graveyard. It should also be noted that adoption [in the sense that the
      child is given the name of the person who adopts him] is forbidden in
      Islam, because Allaah says (interpretation of the meaning):
      
“Call
      them (adopted sons) by (the names of) their fathers.” [al-Ahzaab 33:5]
 And
      Allaah is the Source of strength. May Allaah bless our Prophet Muhammad
      and his family and companions, and grant them peace.