Rajesh Khanna in the first and last time, he appeared in Rajkumar Kohli's Film. Rajesh Khanna and Rekha both of them appeared in one Qawali Song.
After Muqabla, Raajkumar Kohli started an big film Badle Ki Aag and Then an Bigger Film Raj Tilak.
Rajkumar Kohli for the first time had Directed an Film for outside producers Raja and Desai (Reena Roy's brothers) After Muqabla Raja-Desai produced Lakshmi directed by B.S.Thapa with Reena Roy and Raj Baabar, then they produced. Takkrao directed by Harmesh Malhotra, starring Shatrugan Sinha, Rajnikant, Hema Malini, Anita Raaj and Amrish Puri. It is 20 years now this completed film not yet. released.
After the success of Jani Dushman, Rajkumar Kohli made Muqabla for Reena Roy.
The director was criticized for casting a 18 year old Bindiya Goswami as the 50 year old Sunil Dutt's heroine especially since they were shown to be the same age and the older Reena Roy played Bindiya's younger sister. Bindiya stated that she was Sunil Dutt's daughter Anju's best friend. When she had to shoot romantic scene with Sunil she would feel so uncomfortable. The worse was when Anju visited the film's sets unannounced.