Burying Vs Cremating
This video explains the whole concept of religion, in sub-categories of dietary, haram-halal (ikhlaaqi), ibadah and customs and norms (rasoom-o-adab). The burial belongs to the last category and they hold their own sanctity. Customs should be observed in all conditions and can only be relaxed when there is a pressing need and no other alternative is available. Please refer to the video below from 1:30:18 to 1:38:22 https://youtu.be/bLJp76ywjWA?t=5418