On this day , Duryodhana was called by her Mother Gandhari ,she asked him to come nude in front of her after bath,she is going to open her eyes and his body will become immortal.Lord Krishna plays smartness and stops Duryodhana , while he was going to meet Gandhari , Krishna told Duryodhana please cover your private part as it doesn't looks decent to face your mother with nudity.Bhim kills Duryodhana on hitting him below the belt .