Namak Haraam

Namak Haraam Hindi , Nastaliq , English Traitor is a 1973 Indian Hindi drama film directed by Hrishikesh Mukherjee. The music is by R.D. Burman, the screenplay by Gulzar, and lyrics by Anand Bakshi. The film stars Rajesh Khanna and Amitabh Bachchan. It also stars Rekha, Asrani, Raza Murad, A.K. Hangal, Simi Garewal and Om Shivpuri. Rajesh Khanna received his third BFJA Awards for Best Actor Hindi in 1974 for this film.

The story focused on two friends, Somu Rajesh Khanna and Vicky, and how Somu tries to infiltrate the trade union of his friends. Amitabh Bachchan plays a rich mans son, Vicky, who has a fight with a union leader and later sends his best friend Somu to grow bigger than the previous union leader. Somu starts getting influenced by the ideals of workers which leads to confrontation between the two friends. This story concentrates on the rise of unions with the backdrop of Mumbais textile mills and inflation in the early 70s.

Source: Wikipedia