तीर्थवंशोपदेशः
Tīrtha-vaṃśa Upadeśa: Instruction on the Fruits of Sacred Waters
निरोड्कारेण यद् भुक्तं सशस्त्रेण च भारत । दुरात्मना च यद् भुक्तं तं भागं रक्षसां विदु:
nirod-kāreṇa yad bhuktaṁ saśastreṇa ca bhārata | durātmanā ca yad bhuktaṁ taṁ bhāgaṁ rakṣasāṁ viduḥ ||
ಭೀಷ್ಮನು ಹೇಳಿದರು—ಓ ಭಾರತನೇ! ಅನುಮತಿ/ಅರ್ಹತೆ ಇಲ್ಲದವನು ಮೊದಲು ತಿಂದ ಅನ್ನ, ಅಥವಾ ಶಸ್ತ್ರಧಾರಿಯು ಅಥವಾ ದುಷ್ಟಮನಸ್ಸಿನವನು ಉಪಯೋಗಿಸಿದ ಅನ್ನ—ಅದನ್ನೂ ರಾಕ್ಷಸರ ಪಾಲೆಂದು ತಿಳಿಯುತ್ತಾರೆ.
भीष्म उवाच
Food should be accepted only when it is obtained and approached with dharmic fitness and restraint; if it has been first consumed/handled by unauthorized, armed, or wicked persons, it is considered spiritually impure—symbolically assigned to rākṣasas—and should be avoided.
In the Anuśāsana Parva, Bhīṣma instructs Yudhiṣṭhira on dharma. Here he gives a rule about the propriety of eating: certain prior contact with food (by unfit/unauthorized, armed, or immoral persons) renders it unfit for a righteous person.