Mumbai, Oct 21: It will be a big B'wood clash this Diwali, as ‘Son of Sardar' and ‘Jab Tak Hai Jaan' will come face to face. While, Bigg Boss Salman Khan is making it quite clear on whose side he is when it comes to the big boxoffice battle this Diwali, It well known that Shah Rukh and Salman don't exactly share a good relation. On the other hand, Ajay as well as his Son of Sardaar co-star Sanjay Dutt are known to be close to Salman and the Dabangg superstar seems to be going all out to promote Ajay's film.Salman Khan shares a laugh with the film's stars Ajay Devgn and Sanjay DuttAfter agreeing to do the item number, 'Po po', in SOS on Ajay's request, and confirming he will launch the trailer of his upcoming biggie Dabangg2 with the film, Salman invited the star cast of SOS on the sets of the sixth season of his hugely popular reality show, Bigg Boss. The episode, aired on Friday night, saw the film's hero and co-producer Ajay along with heroine Sonakshi Sinha and Sanjay engaging in some random frolic at the sets of the show in Lonavala. 'Po po' was obviously the song of choice as the stars shook a leg, before Sonakshi zipped in on a bicycle to reprise her highlight motorbike stunt from SOS that has become quite popular in the trailers.