Mahabharata — Anushasana Parva, Shloka 101
आचारप्रशंसा
Praise of Ācāra as the Basis of Longevity, Fame, and Prosperity
भोजन करनेके पश्चात् कुल्ला करके मुँह धो ले और एक हाथसे दाहिने पैरके अँगूठेपर पानी डाले ।।
bhojanaṃ kṛtvā kullaṃ kṛtvā mukhaṃ prakṣālya ekena hastena dakṣiṇapādāṅguṣṭhe jalaṃ nikṣipet | pārṇiṃ mūrdhni samādhāya spṛṣṭvā cāgniṃ samāhitaḥ | jñātiśraiṣṭhyam avāpnoti prayogakuśalo naraḥ ||
毗湿摩说道：用餐之后，当漱口洗面；继而以一手将水洒在右脚大拇趾上。随后，收摄其心，将掌置于头顶，并以意念触及（即恭敬承认）神圣之火阿耆尼（Agni）。善于依正法仪轨而行之人，必能在宗族亲属之中获得卓越与尊位。此教诲强调：饭后守净之律与专注敬火之心，乃居家持法之风范。
भीष्म उवाच
Educational Q&A
That everyday dharma is upheld through disciplined cleanliness after eating and mindful reverence to the sacred fire; correct observance (prayoga) cultivates social and moral excellence, bringing esteem among one’s relatives.
Bhishma, instructing on rules of conduct, describes a sequence of post-meal actions—rinsing, washing, pouring water on the right great toe, placing the palm on the head, and mentally honoring Agni—stating that such proper practice leads to distinction among one’s kin.