Nishtha refers to permanently getting rid from the sufferings/ pain, and Hetu refers to cause. Diseases hinders the person from getting salvation, so diseases are considerd as Naistika Hetu. :
नैष्टिक हेतु ( naiṣṭika hetu )Meaning: Nishtha refers to permanently getting rid from the sufferings/ pain, and Hetu refers to cause. Diseases hinders the person from getting salvation, so diseases are considerd as Naistika Hetu.
