The Compendium of Caraka 1.8.20

1.8.20

nāratnapāṇirnāsnāto nopahatavāsā nājapitvā nāhutvā devatābhyo nānirūpya pitṛbhyo nādattvā gurubhyo nātithibhyo nopāśritebhyo nāpuṇyagandho nāmālī nāprakṣālitapāṇipādavadano nāśuddhamukho nodaṅmukho na vimanā nābhaktāśiṣṭāśucikṣudhitaparicaro na pātrīṣvamedhyāsu nādeśe nākāle nākīrṇe nādattvā 'agramagnaye nāprokṣitaṃ prokṣaṇodakairna mantrairanabhimantritaṃ na kutsayanna kutsitaṃ na pratikūlopahitamannamādadīta, na paryuṣitamanyatra māṃsaharitakaśuṣkaśākaphalabhakṣyebhyaḥ, nāśeṣabhuk syādanyatra dadhimadhulavaṇasaktusarpibhyaḥ, na naktaṃ dadhi bhuñjīta, na saktūnekānaśnīyānna niśi na bhuktvā na bahūnna dvirnodakāntaritāt, na chittvā dvijairbhakṣayet //

One should not consume food without a jewel on one's hand, unbathed, wearing dirty clothes, without chanting mantras, without offering oblations to the deities, without offering libations to the ancestors, without giving to teachers, guests, and dependents, without a pleasant fragrance, without a garland, without washing hands, feet, and face, with an unclean mouth, facing north, with an agitated mind, while attendants are without food, unrefined, impure, or hungry, in impure vessels, in an improper place, at an improper time, in a crowded place, without offering the first portion to the fire, unwashed with sprinkling water, unhallowed by mantras, while disparaging it, food that is contemptible, or food served with hostility; nor [should one consume] stale food, except for meat, greens, dried vegetables, fruits, and snacks; one should not consume everything without leaving a remainder, except for curd, honey, salt, barley meal, and ghee; one should not eat curd at night; one should not eat barley meal alone, nor at night, nor after a meal, nor in large quantities, nor twice [in a day], nor interrupted by water; and one should not eat it by biting it off with the teeth.