Shloka 4
तीर्थवंशोपदेशः
Tīrtha-vaṃśa Upadeśa: Instruction on the Fruits of Sacred Waters
लड़घितं चावलीढं च कलिपूर्व च यत् कृतम् रजस्वलाभिदृष्टं च तं भागं रक्षसां विदु:
bhīṣma uvāca | laṅghitaṃ cāvalīḍhaṃ ca kalipūrvaṃ ca yat kṛtam | rajasvalābhidṛṣṭaṃ ca taṃ bhāgaṃ rakṣasāṃ viduḥ ||
ビーシュマは言った。人に跨がれた食物、舐められた食物、口論や争いのさなかに調えられた食物、あるいは月経中の女の視線に触れただけの食物——そのような分は羅刹（ラークシャサ）のものと理解される。
भीष्म उवाच
Educational Q&A
Bhishma teaches that food becomes unfit when tainted by disrespect (stepped over), contamination (licked), discord (prepared amid quarrel), or certain ritual conditions (seen by a menstruating woman). Such food is deemed outside the sphere of dharmic consumption—symbolically assigned to rākṣasas—so one should avoid offering or eating it.
In Anushasana Parva, Bhishma instructs Yudhishthira on dharma and proper conduct. Here he lists specific kinds of food considered impure and therefore not to be eaten or offered, framing the rule through the traditional idea that such tainted portions belong to rākṣasas.