Mahabharata — Anushasana Parva, Shloka 40
आचारप्रशंसा
Praise of Ācāra as the Basis of Longevity, Fame, and Prosperity
त्रीणि देवा: पवित्राणि ब्राह्णानामकल्पयन् । अदृष्टमद्धिर्निर्णिक्ते यच्च वाचा प्रशस्यते
trīṇi devāḥ pavitrāṇi brāhmaṇānām akalpayan | adṛṣṭam addhir nirṇikte yac ca vācā praśasyate ||
毗湿摩说道：诸天为婆罗门设立三种净化之因：其一为不可见者（adṛṣṭa），即正行所积之功德；其二为水，以洗濯而净；其三为由言语所称赞并加以祝圣者——亦即真实、赞颂与神圣诵言之净化力量。
भीष्म उवाच
Educational Q&A
Purity is threefold: (1) inner, unseen merit born of dharma (adṛṣṭa), (2) external cleansing by water, and (3) sanctification through disciplined, praised speech—suggesting that ethical life requires both conduct and words, not merely ritual washing.
In Anuśāsana Parva, Bhīṣma continues instructing Yudhiṣṭhira on dharma. Here he states a normative rule: the gods established three purifying means for Brāhmaṇas, emphasizing the religious-ethical importance of merit and speech alongside physical purification.