Music composer Madan Mohan passed away while working for Laila Majnu, than music composer Jaidev completed the remaining work. This film had introduced Ranjeeta Kaur as film actress.
K.Asif had started a film 1966 based on Qais And Laila and the film was tittled Love And God and then the shooting stopped in 1971. Then H.S.Rawail made Laila Majnu based on the same story of Qais And Laila.
After the success of Laila Majnu, filmaker H.S.Rawail started Deedar E Yaar.
After the film released, Rishi Kapoor refused to promote Ranjeeta. The problems between them were never discussed openly. Jeetendra also rejected films with her. Rikku Rakesh Nath stated that there was a smear campaign against Ranjeeta in the film industry. Many of her colleagues who were against her, spread false rumors about Ranjeeta, that she was on drugs. The only films she was able to sign were B-grade films opposite Mithun Chakraborty. Plus with her involvement with Akbar Khan many thought she was going to get married. Luckily those films she did with Mithun did do well and established them as a hit-pair (a B grade nevertheless!)
After death of Music Director Madan Mohan,Producer HS Rawail approached younger Rajesh Roshan to compose the music for three pending songs.Rajesh Roshan refused it saying he wasn't worth of sharing soundtrack with genius like Madan Mohan.