The film, directed by Rohit Shetty, released last Friday and said to have grossed Rs 21 crore on the opening day.
Hrithik congratulated SRK in a Twitter post, saying, It's a bird..It's a plane...NO it's DILWALE. Flying high!! To the man who makes his own luck @iamsrk and team- blockbuster time! Save the last dance for me."
"Dilwale" also stars Kajol, Varun Dhawan and Kriti Sanon.
Its opening collection beat that of Sanjay Leela Bhansali's "Bajirao Mastani" in the big Bollywood clash.