"Yes Aishwarya Rai Bachchan and Randeep Hooda are going to be apart in my next biopic 'Sarbjit'," Kumar said in statement.
Randeep will play Sarabjit Singh, while Aishwarya will essay his sister Dalbir Kaur Singh.
The movie will narrate the struggle of Dalbir Kaur, whose sole aim in life was to get her brother, who had been mistakenly taken to be an Indian spy, out of jail.
"Sarabjit" will be shot over one schedule of 70 days in Punjab, starting October 2015.