evidence: It is obvious that if the Hindu minorities in Pakistan wish to emigrate and go to their homelands of Hindustan they will be at liberty to do so and ‘vice versa’ and those Muslims who wish to emigrate from Hindustan can do so and go to Pakistan; and sooner or later an exchange of population will have to take place and Constituent Assemblies of Pakistan and Hindustan can take up the matter and subsequently the respective Governments in Pakistan and Hindustan can effectively carry out an exchange of population wherever it may be necessary and feasible.