5 lessons Don gave us in sass – 40th anniversary special

The 1978 classic starring Amitabh Bachchan, Zeenat Aman and Pran, remains a milestone in Indian cinema. As Chandra Barot's film completes 40 years (it was released on 12 May 1978), we look at five dialogues by the writer duo Salim-Javed that are lessons in sass.