 It took more than 20 years to make (the longest production time for  any movie) after running into a series of difficulties, including  the deaths of lead actor Dutt, Guru (qv) in 1964 and director  Asif, K. (qv) in 1971. The film was abandoned, then revived by  Asifs widow, Asif, Akhtar (qv), and finally released in  incomplete form.