Hrithik, 40, will be seen in an action hero avatar in the Siddharth Anand-directed film, which also stars Katrina Kaif and will hit theatres on October 2.
"Here it is. To the one who is more about other people than himself, Paint! And give world a message! Any. Salman Khan qubool (accept)?," Hrithik posted on Twitter.
The 'Krrish 3' star has previously dared Shah Rukh Khan, Ranveer Singh, Priyanka Chopra, Uday Chopra and other Bollywood celebrities with innovative tasks.

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