What is the ruling on burying a child with another man in the same grave?

Question:
May Allah reward you. Your Eminence the Shaykh! A questioner asks and says: We prayed the funeral prayer over a man and a child, and at the time of burial, the relatives of the deceased man requested that the child be buried with their relative in one grave. What is the ruling on that? And may Allah reward you with good.

Answer:
This is not permissible except in a case of dire necessity. In a case of dire necessity, there is nothing wrong with burying two, three, or more people in one grave if the number of dead is large and it is difficult to dig a grave for each one. In that case, there is nothing wrong with gathering more than one person in a grave for the sake of dire necessity. However, in a case of spaciousness and choice, every deceased person is buried in a separate grave, whether they are young or old.