"Rajesh Khanna was a living legend and was our superhero. He has left behind the rich legacy for younger generations," Soni told a news channel.
"His films had no language barriers and was liked by people all across. We were planning to organise a retrospective of Rajesh Khanna. It is sad that we have lost him," she added.
Rajesh Khanna passed away Wednesday after a prolonged illness. He was 69. His funeral is scheduled for 11 a.m. Thursday.