Babul.

The story follows a mother with two sons—one her real son, a careless criminal, and the other unrelated to her but deeply devoted. While the kind son’s acts of compassion help him overcome every hardship, the criminal son struggles to earn his mother’s love and respect, learning that worth is proven through actions, not blood. The film is considered Sultan Rahi’s first major film and won five Nigar Awards, including Best Punjabi Film of 1971.