Ajay acknowledged King Khan's wishes at the film's trailer launch here Friday, saying: "I am very thankful to him for that."
"I think all the problems that are published and shown in media are baseless. There has never been a problem. We all wish others 'all the best'. We work as one unit," he added.
There were reports that the actors shared a sour relationship when Shah Rukh's "Jab Tak Hai Jaan" and Ajay's "Son of Sardaar" had released on the same day on Diwali in 2012.
"Singham Returns" is the sequel to the hit film "Singham", which too starred Ajay.
This time, viewers are being promised a more power-packed performance from the cast.