The argument began because the passenger was travelling without a ticket, reports said.
Two train ticket collectors have been suspended after they were seen savagely assaulting a passenger in Bihar's Muzaffarpur earlier this week in a video that has gone viral.
An argument between one of the ticket checkers and the passenger devolved into a full-blown fight, the video recorded by one of the passengers shows.
When the ticket checker tries to yank the passenger down from the top berth by grabbing his leg, the passenger tries to resist, kicking the official.
The ticket collector is then joined by a colleague, and they pull the man down to the floor and beat him viciously, even kicking him in the face with their boots.