Amar Akbar Anthony

Kishen Lal, a driver working for a smuggler Robert on the run from the police and leaves his three sons in a park. All of them are found and raised separately-the eldest becomes a Hindu police officer, the youngest becomes a Muslim tailor/singer and the middle son becomes a Christian hooligan. Years later, they find themselves all donating blood to a woman in a hospital by coincidence. All three meet and fall in love with different women, but when one of them is kidnapped by Robert (whose fortunes have changed again and is now a bigger smuggler), they all (women included) become involved in the struggle for her release...

Amar Akbar Anthony (Devnagari: अमर अकबर एन्थोनी) is a 1977 Bollywood film about three brothers separated during their childhood who grew up in three different homes, adopting three different religions. It was the biggest blockbuster of 1977 and has also won several Filmfare awards.

Source: Wikipedia