It was a reunion of Bollywood's 'Karan Arjun'! Superstars Shah Rukh Khan and Salman Khan came together to shoot for a promo of special episode of `Bigg Boss Nau`.

SRK and Salman are known for their bittersweet bond behind the camera. But of late, they have been promoting and supporting each other and their work. Taking this a step forward, Shah Rukh went and shot for an episode of the controversial reality show , hosted by Salman, to promote his forthcoming film `Dilwale`.

Salman had built the anticipation for this reunion last weekend by ending the episode by saying that Shah Rukh will be coming to the show.

The duo shot the promo at Mehboob Studio here on Tuesday and will go on air on the Colors channel soon.

In some photographs obtained by IANS, Shah Rukh can be seen wearing a white t-shirt and jeans, while Salman looks casual in a black shirt and ripped jeans.

SRK and Salman have shared the frame in films like "Karan Arjun", "Hum Tumhare Hain Sanam" and "Kuch Kuch Hota Hai".

Over some time now, it seems they are setting new example of healthy competition in Bollywood. Shah Rukh unveiled the first look of Â`Bajrangi BhaijaanÂ`, and Salman has maintained that there will be 'double dhamaal' with his "Sultan" and Shah Rukh's "Raees" releasing on Eid in 2016.

Meanwhile, `Dilwale", which brings the iconic pair of Shah Rukh and Kajol on the silver screen after five years, promises a ride of thrill, action, romance and surprise. The Rohit Shetty directorial will release on December 18.