Looks like Himesh Reshammiya sure knows how to honour friendship! The reason why he walked out of Soham Shah's upcoming film Sher is that Salman's rival Vivek Oberoi had recently joined the cast. A source was quoted saying that Himesh has decided not to do the music for the film as Vivek had just joined the cast. Apparently, when Himesh was signed, he was told that the film would star Sonu Sood along with Sanjay Dutt. Himesh holds Sanjay Dutt in high regard and he was doing this film only because Dutt had recommended his name. When Himesh learnt during the shooting schedule of the film in Rajasthan that Vivek had just joined the cast, he wanted to opt out. However, he stuck on only because of Sanjay Dutt. However, things got worse when Vivek Oberoi was recently quoted saying that Sher is bigger than Tiger, indirectly referring to Salman's latest film Ek Tha Tiger. This is when Himesh walked out of the project without working on the final song. Himesh has always credited Salman for his success in the film industry.