Kamal, who lent his vocal prowess to Ratnam's Ponniyin Selvan 2, took to Twitter to pen the note: "If one were to count life by the happiness that they create around them and if age is calculated by the friends around you, my dear #ManiRatnam you are going to be a much older man today! A doyen of Indian Cinema who has touched the hearts of millions through his art and one who transformed dialogues into a lovely visual experience."
Haasan added: "You have constantly pushed the boundaries of cinema unmindful of the scale of challenge by constantly learning. Today you are a master inspiring the next generation of filmmakers through whom your legacy shall reverberate perpetually."
"From Nayakan to #KH234, our journey together has been personally rewarding and enriching for me. Many more happy returns of the day and more to come my friend! #HappyBirthdayManiRatnam."