तीर्थवंशोपदेशः
Tīrtha-vaṃśa Upadeśa: Instruction on the Fruits of Sacred Waters
परोच्छिष्टं च यद् भुक्तं परिभुक्त च यद् भवेत् । दैवे पित्रये च सततं त॑ भागं रक्षसां विदु:
bhīṣma uvāca | parocchiṣṭaṃ ca yad bhuktaṃ paribhuktaṃ ca yad bhavet | daive pitrye ca satataṃ taṃ bhāgaṃ rakṣasāṃ viduḥ ||
Bhīṣma sprach: Speise, die zu den Resten eines anderen geworden ist, oder von der bereits gegessen wurde, und ebenso Speise, die man verzehrt, ohne zuvor den Göttern und den Pitṛs (Ahnen) die gebührenden Anteile darzubringen—solche Speise gilt in Riten für die Götter und für die Pitṛs stets als der Anteil der rākṣasas.
भीष्म उवाच
One should not use food that is another’s leavings or already eaten-from for divine or ancestral rites, and one should not consume food without first making the proper offerings; otherwise it is deemed spiritually impure and aligned with rākṣasic (harmful, unrighteous) influence.
In the Anuśāsana Parva’s instruction on dharma, Bhīṣma is teaching norms of conduct connected with offerings and purity, explaining which kinds of food are unfit for daiva and pitṛ rites and why such misuse is condemned.