Remake of Zorba The Greek.
The film went thru several title changes. Loha Aur Lahu, Maan Gaye Ustad, Dushman Dost.
The film was titled "Ajab Khan" at one point. Imtiaz was earlier directing a film titled "Amaan aur Ajab Khan" with Parikshat Sahni and Amjad Khan. This was in 1978.
The film went thru countless delays because the producers were having financial problems. Naseeruddin did not want to leave the film because it was his first big commercial film he had signed in 1979.
Naseruddin Shah openly stated that he disliked the film.