Manusmriti
हविर्यच्चिररात्राय यच्चानन्त्याय कल्पते । पितृभ्यो विधिवद् दत्तं तत् प्रवक्ष्याम्यशेषतः ॥ २६६ ॥
I will now fully declare what kind of sacrificial food, given to the manes according to the rule, will serve for a long time or for eternity.
english translation
haviryaccirarAtrAya yaccAnantyAya kalpate । pitRbhyo vidhivad dattaM tat pravakSyAmyazeSataH ॥ 266 ॥
hk transliteration by Sanscript