Mahabharata 12.172.32

अनियतशयनासनः प्रकृत्या; दमनियमव्रतसत्यशौचयुक्तःअपगतफलसंचयः प्रहृष्टो; व्रतमिदमाजगरं शुचिश्चरामि

aniyataśayanāsanaḥ prakṛtyā; damaniyamavratasatyaśaucayuktaḥapagataphalasaṃcayaḥ prahṛṣṭo; vratamidamājagaraṃ śuciścarāmi

Our plain-language meaning of this verse is waiting for scholar review.