The film, which hit the screens on July 10 in Telugu, Tamil, Malayalam and Hindi, is the first south Indian film to enter the Rs.300 crore club in just nine days of its release.
"To everyone involved, thanks for the inspiration. You can only reach the sky if you are willing to take the leap!" Shah Rukh tweeted on Sunday.
The movie, a mythological drama about two brothers at war for a kingdom, stars Prabhas, Rana Daggubati, Anushka Shetty and Tamannaah Bhatia in the lead roles.
The second part in the Rs.250 crore franchise is slated for release next year.