Superstar Amitabh Bachchan today refrained from commenting on the Ghulam Ali issue. The Pakistani ghazal maestro, who was slated to perform in Mumbai, had to call off his programme after steing protests from Shiv Sena. (Photos: Amitabh Bachchan celebrates 73rd birthday with media) When Big B was asked to comment on the same, the actor said," Ghulam Ali's case has become a political issue. Since I am not in politics, I won't be able to comment." (Read: Khans are an inspiration to many: Amitabh Bachchan) [related-post] Amitabh Bachchan also said: "If there is something like this and if the government can make any rule which states what should happen and what shouldn't, I will follow d rules. For me, they are just artistes. The rest whatever politics is happening, I can't comment on the same as I am not into politics." Watch: Amitabh Bachchan celebrates his 73rd birthday: