Superstar Rajinikanth has been known to go to great extents for the sake of friendship! 

Rajini is still in touch with his childhood friends in Bengaluru and he never misses an opportunity to spend time with them whenever he visits Karnataka.

Well, now the news is that Rajini is planning to go to Mumbai soon, to meet his age-old friend and 'Guru' Shatrughan Sinha, who has not been keeping well.

"Right from the day Shatrughan Sinha was hospitalised, Rajini has been calling him frequently to know the improvements in his health. The Superstar has also given Sinha health tips", say sources.