When Amitabh Bachchan travelled on a Mumbai local train!

Amitabh Bachchan has decided to lend his support to Saurabh Nimbkar, who participated in the TV show Aaj Ki Raat Zindagi - and in a very unique way!

The Bollywood megastar on Sunday morning went out of his way to express support for Saurabh, who regularly sings on local trains to collect money for cancer patients - Bachchan boarded a local train himself!

According to Firstpost, Amitabh Bachchan boarded a local train from Chhatrapati Shivaji Terminus (CST) and travelled up to Bhandup on the Central line, with Nimbkar alongside him. Bachchan sat along with Nimbkar, and sang with him, including a few lines from 'Rang Barse'.

Later, Bachchan Sr tweeted about his adventure along with a picture.

T 2059 -Local from VT to Bhandup to support Saurabh, who sings in locals for charity to cancer .. sang with him .. pic.twitter.com/K3WiabhYU7

— Amitabh Bachchan (@SrBachchan) November 15, 2015

He even posted on his official Facebook account.

Some overjoyed fans/ commuters also posted videos.

Really great gesture by @SrBachchan for #BigBAurHeroKaSafar pic.twitter.com/ILpUzeKGDR

— PREKSHA MODI (@modipreksha) November 15, 2015

Reel hero turns into real hero. pic.twitter.com/lJ4rKpWPOx  @SrBachchan 's humble act inspires everyone.  #BigBAurHeroKaSafar

— kprocks (@kp_85) November 15, 2015