You cannot expect only "Hindus" to be liberal. Every one of have to renounce the outdated religious dogmas and see the fellow humanbing for what he really is rather than segregating them into caste, creed, colour, religion, region, etc.
There is no meaning in asking the "Hindus" top migrate to Nepal. A separate country was created for the "Muslims" only. Btw two parts of Pak could not remain for more than 25 years after creation. So much for much for your "Ummah"!