How many movies have Amitabh Bhattacharya and Siddharth Mahadevan collaborated on?

They have worked on 4 movies together! Their first movie together was Dhoom 3 (2013) while their highest rated movie together was 2 States (2014). They have not worked together since Bunty Aur Babli 2 (2021). They are most known for their crime films together.