Emraan Hashmi on Sunday tweeted that 46 years ago, his grandmother had played the role of Amitabh Bachchan's mother in 'Zanjeer'. "An uncanny coincidence: yesterday was my first scene with Mr Bachchan and in the course of our conversation just realised.. yesterday was also 46 years of #zanjeer," he tweeted. Emraan is working with Bachchan in the upcoming film 'Chehre'.