Shor (1972)

Shankar (Manoj Kumar), his lovely wife Geeta (Nanda) and Deepak (Master Satyajeet) are a poor but happy family. Tragedy strikes one day, when Deepak wonders over to the railway tracks. When Geeta rushes in to warn and rescue him, she is run over by the train and is instantly killed. Deepak loses his vocal chords and cannot speak. Shankar takes Deepak to see a doctor (Raj Mehra), who examines Deepak, and tells Shankar that Deepak can recover his voice after a surgerical operation, which may cost around 1000 to 1500 rupees. Shankar is unable to afford this but is determined to find the money to cure his son. Shankar's mom (Kamini Kaushal), sister (Naaz), Khan Badshan (Prem Nath), Rani alias Raat ki Rani (Jaya Bhaduri) offer support. And Shankar takes part in a grueling tournament that puts his very life at risk.