Jhuk Gaya Aasman(1968)

Sanjay and Priya are in love and are planning to marry. When Priya learns that her father has been arrested, they decide to postpone their wedding. However, destiny has other plans as Sanjay dies in a car crash. In heaven, he learns that his death was a mistake, and he is sent back to Earth in the body of his lookalike, the wealthy but morally corrupt Tarun Kumar Saxena, the man who ruined Priya's family.