Shloka 753
Adhyāya 166: Kṛtaghna-doṣa (कृतघ्नदोषः) — the fault of ingratitude and the limits of expiation
मांसं मूत्रं पुरीषं च प्राश्य संस्कारमर्हति । अनास्तिक पुरुषोंके लिये एक गोदानमात्र ही प्रायश्चित्त बतलाया गया है। कुत्ते
bhīṣma uvāca | māṁsaṁ mūtraṁ purīṣaṁ ca prāśya saṁskāram arhati |
毗湿摩说：“若二次生者（dvija）食用肉、尿或粪秽，便应依所规定的净化仪轨再受重行之礼（saṁskāra）。此处教义强调：对清净与信德的蓄意违犯——尤其是与不净或禁物相关之举——绝非小过，必须以正式的赎罪与仪式纪律来恢复其法（dharma）之地位。旁文又补充说：对不信者（nāstika），仅以施牛一头即为赎罪；而二次生者若食犬、猪、人、雄鸡与驴等之肉，或食其秽物（粪/尿），则须重新受行诸净礼与成仪（saṁskāra）。”
भीष्म उवाच
Educational Q&A
The passage teaches that serious violations of purity norms—especially consuming forbidden or impure substances—require formal expiation and restorative rites (saṁskāra) to re-establish dharmic eligibility; it also notes a specific expiation (cow-gift) in the case of a nāstika.
In the Shanti Parva’s instruction on dharma, Bhishma is advising Yudhishthira about rules of conduct and expiation, specifying what purification is required when a dvija consumes impure substances and mentioning related expiations for particular cases.