Migrants from Pakistan, Bangladesh and Afghanistan who wish to get the benefit of Citizenship Amendment Act, have to provide proof of their religious beliefs while applying for Indian citizenship, sources told NDTV. "In India we all have submitted some form of proof relating to religion and all those who want to seek Indian citizenship, they all have to submit some sort of document that they have entered India before December 31, 2014," said a senior functionary aware of developments relating to the drafting of rules.