Outwardly Salman and Shahrukh shows that they are close buddy and share a good rapport but the truth is something different which they had kept hidden from all. The true color of their friendship came into forefront when Sallu invited Shahrukh on Katrina’s birthday bash and insulted him in presence of all. On Salman’s rowdy comments, Shahrukh lost his temper and went ahead to hit him. Situation would have worsen if Gauri Khan (Shahrukh’s wife) may not have intervened and controlled the situation.
Actually cold war started between them when Shahrukh refused to appear in Sallu’s home production Main Aur Mrs Khanna. Whereas Salman never refused SRK and always had been ready to help him. Sallu appeared in SRK's KBC with Katrina Kaif, he has also done a cameo in Om Shanti Om. Salman remarked SRK matlabi (selfish) and said, "You are a matlabi insaan. You only call people when you need them, and then don't keep in touch."
When Gauri and Shahrukh entered, Salman was drunk up to neck and had a least sense that he was insulting his guest and went on passing sarcastic comments at Shahrukh. He also remarked badly about Paanchvi Paas and called it a flop show.
Source : http://www.bollywoodmantra.com/
