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 ||
毗湿摩说道：被人跨越过的食物、被舔过的食物、在争吵与纷争中烹制的食物，乃至仅被经期女子目光所及的食物——这样的份额都被认为属于罗刹（rākṣasa）。
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.