Sorry for posting it here, but got no response in the initial post in career section.

I resigned from my job recently, during resignation one of my manager warned me of blacklist and bad remarks in background verification. He told he did this earlier to a employee and he is unemployed. Does he have the power to influence background verification or put bad remarks? Can labour courts help here, I was top performer but he got triggered when i resigned, He was quite egoistic and tried to show his authority by showing the teams that work under him. I am not at all intimidated with his words because he was talking unprofessionaly, even if I stayed after his words it was against my ethics. This is not a small company, it is a well known company and people admire to join the company.

Any suggestions if I get bad remarks, some friends suggested to sue the company in labor court.
After talking to some people I realised employees in India are supressed and they don't have anything in hand to defend themselves, some people suggested to stay and become slave of the manager, they justified this by saying that you can do nothing to him or the company.