New Delhi, Jan. 22 -- The Supreme Court on Wednesday refused to pass any order to restrain the operation of Citizenship (Amendment) Act (CAA) or National Population Register (NPR).

The top court gave four weeks time to the Centre to file counter affidavit and the hearing will take place in the fifth week.

A bench headed by Chief Justice S.A. Bobde also indicated the probability of constituting a Constitution Bench to take up the matter on the next date of hearing.

Senior advocate Kapil Sibal appearing for Indian Union Muslim League (IUML) challenging the new law, urged the court to postpone the process for a few months.

However, Attorney General K.K. Venugopal opposed it saying it was equivalent to a stay.

"It means as good as granti...