Sabir was scolded by his mother for returning late and in a fit of rage he sprinkled kerosene and set himself ablaze, police said.
The fire soon engulfed the entire room where wool and other material was stored, injuring his three-year-old brother who was also present, police said, adding that Sabir was rushed to Varanasi where he died this morning.
The younger brother was undergoing treatment, police added.