The incident took place yesterday when a quarrel broke out between Jay Sunil Kondalkar and Jignesh Kondalkar (25) over some monetary issue, they said.
Sunil died during the scuffle following which Jignesh was charged with murder by Kolsewadi police at Kalyan, they said.
Jignesh was also injured and has been hospitalised, Police PRO Sukhada Narkar said.
The duo who were living without their family and used to quarrel over money often and were alcoholics, police said.
Yesterday, when he returned home after such a function, Jignesh, an auto driver demanded some money which Sunil refused to give. This led to a verbal duel and Jignesh attacked him with a rod leaving him seriously injured.
He was immediately rushed to Sion Hospital, where he died while undergoing treatment.