The court also imposed a fine of Rs 5,000 on Kumar.
Additional Public Prosecutor Shabd Kumar said the convict attacked his father Ramudgar Singh with a sword on January 18, 2015, at their residence in Veer Kunwar Singh Colony in Hajipur in connection with a property dispute.
Singh's right hand was chopped off in the attack, the prosecutor said.
An FIR was filed with the town police station against the son based on his father's statement.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)