The crooks allegedly went after the former military man and demanded that he get rid of his "prized possession," because it was a "challenge to their authority."
"Don't try to intimidate us with your moustache. Get them removed soon or we will root them out," the facial-hair-fretting felons allegedly told the victim.
When he refused, the gang of outlaws chopped off his left ear with a knife. Adding insult to injury, the criminals "thrashed" the man before taking off.
The ex-trooper was treated at a local government hospital.
"The police have identified the criminals involved in the attack and are conducting raids to nab them," local police official Sanjeet Kumar Sinha told the Gulf News.