Mala Sinha and Sharmila Tagore had a intense rivalry during the making of the film.
The song Haseen Dard De Do had a cover version by Shalmali Kholgade in the album The Bartender -Classic Bollywood With a Twist.
An incident of Mala Sinha slapping Sharmila Tagore was reported on the sets.But both actress denied such an incident.There was professional rivalry going between the two then.
Joy Mukherjee stated " I made Humsaaya with great flamboyance. I got tired of directors making me sing and chasing heroines in the park. So I decided to make a different film. I spent money with out giving it a second shot. I bought and blew up 16 trucks. I bashed a Mercedes in my film. In the process I bashed the budget of my film. Mala Sinha and Sharmila Tagore took turn's bashing me. They kept demanding their role be better than the other person.