Question

"Take your pistol, Mr. Pawar.We shall enter your office", said Mr karni. ( change the narration)

Answer 1

Mr Karni told Mr Pawar to take his pistol, they shall enter their office.

HOPE IT HELPS!!

Answer 2

Mr Karni told Mr Pawar to take his pistol when they shall enter their office.

According to the given sentence, Mr Pawar is a conflict who has his own pistol.  

When it comes to Mr karni, he is a police officer who rounded the office of Mr. Pawar to arrest him to avoid the further negative things which are planned by Mr. Pawar.