He was shooting for director Farah Khan's new film at a luxury hotel in Mumbai when a door fell on him.
A statement from his office on Thursday says Khan was in a hospital being treated for injuries to his face and hands.
The film titled "Happy New Year" also features top stars Deepika Padukone and Abhishek Bachchan.
The 48-year-old Khan has acted in more than 80 films in a career spanning more than two decades.
It is not immediately clear how the door came off its hinges. Khan often refuses to use a stunt double in action films.
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