I was not a silent reader earlier but my health and studies made me
actually I made this post because
when I was studying about melting points
one thing came in my mind
as per the ishwari aunty
her son is iron and of course sona is gold
so iron has higher melting point as comparison to gold i.e . iron will melt first
and here in this case (dev-sona case) iron and gold came closer i.e iron will melt even more fast
so this is why dev the loha ko sona ne hila diya