The letter to his fans is written in Tamil and - because Rajinikanth is ahead of his times, as everyone knows - is dated 2017. In it, he explains that filming Kabali had left him exhausted and he spent the last two months recovering in USA. He also got medical tests done while he was there.
Here's a part of the letter's contents: "I returned to India after hearing the huge success of Kabali and witnessed it in person after coming here and am thrilled. So, heartfelt thanks the crew, director, producer, co-actors, fans, public, youth, women, media friends, theatre owners."
Rajinikanth signs off in style, writing "magizhchi," a Tamil word which translates into "Happy and thanks" in English.
Here's the letter:
This is how he was welcomed in Chennai on Sunday:
Simplicity of a huge superstar.Checking in at at an airport in the US for India.Respect for your humility- Rajnikant pic.twitter.com/yBn6sjGqbK? Rishi Kapoor (@chintskap) July 26, 2016
This video of Rajinikanth strolling down an American street went viral over the weekend.
There is some debate over how much the film has made so far. No independent figures are available but Kabali producer Kalaipuli S Thanu claimed on Saturday that box office receipts in India added upto Rs 250 crores.
Directed by Pa Ranjith, Kabali co-stars Radhika Apte, Dhanshika and Hong Kong star Winston Chao.