Shloka 71
आचारप्रशंसा
Praise of Ācāra as the Basis of Longevity, Fame, and Prosperity
नाध्यापयेत् तथोच्छिष्टो नाधीयीत कदाचन । वाते च पूतिगन्धे च मनसापि न चिन्तयेत्
na adhyāpayet tathocchiṣṭo nādhīyīta kadācana | vāte ca pūtigandhe ca manasāpi na cintayet ||
ビーシュマは言った。「食後、口中に食べ残しがあって不浄の状態にある者は、聖なる文（ヴェーダ）を教えてはならず、また決して自らの誦習（スヴァーディヤーヤ）を行ってはならない。さらに悪臭の風が吹くときは、心の中でさえ誦読を思い浮かべてはならぬ。」この教えは、ヴェーダの学習と教授への畏敬を示し、身体と環境の清浄を、ダルマの規律として求めるものである。
भीष्म उवाच
Educational Q&A
Sacred teaching and self-recitation should be done only in a clean, respectful state: one should not teach or recite while ucchiṣṭa (with food-remnants/impurity), and should avoid even mental recitation in an environment made impure by foul odor.
In the Anuśāsana Parva’s instruction on dharma and proper conduct, Bhīṣma lays down practical rules of ācāra for study/teaching—specifying when recitation is prohibited due to personal impurity (ucchiṣṭa) or an unsuitable environment (malodorous wind).