Anuśāsana-parva Adhyāya 112: Dharma as the sole companion; karmic witnesses; rebirth sequences
Bṛhaspati–Yudhiṣṭhira Saṃvāda
समारोपितशौचस्तु नित्यं भावसमाहित: । केवलं गुणसम्पन्न: शुचिरेव नर: सदा,जो सदा शौचाचारसे सम्पन्न, विशुद्ध भावसे युक्त और केवल सदगुणोंसे विभूषित है, उस मनुष्यको सदा शुद्ध ही समझना चाहिये
samāropitaśaucas tu nityaṁ bhāvasamāhitaḥ | kevalaṁ guṇasampannaḥ śucir eva naraḥ sadā ||
毗湿摩说:凡将清净立为恒常之修持,内在情志常自摄持安定,且唯以善德为饰者——此人应当恒被视为真正清净。
भीष्म उवाच
True purity is defined by steady inner composure and consistent virtuous conduct; one who is continually established in śauca, with a well-collected mind and good qualities, should be considered genuinely pure.
In the Anuśāsana Parva, Bhishma is instructing Yudhiṣṭhira on dharma and right conduct. Here he clarifies the criterion of purity, shifting emphasis from mere external observance to inner disposition and ethical qualities.