during old times ...often daku wld attack doli and try to fetch dulhan with them .... and it was mandatory for larra to fight for his larri .....
and if during the combat larra got killed or jhakmi ..or apahaj ..or anything ..sarbhala wld place larra ...and take care of the bride .....sarbhala acted as substitute larra
so always chooose sarbhala wisely ...menu j kise ne apne viah sarbhala banauna te das dena