The Compendium of Caraka 3.1.24

3.1.24

tatredamāhāravidhividhānamarogāṇāmāturāṇāṃ cāpi keṣāṃcit kāle prakṛtyaiva hitatamaṃ bhuñjānānāṃ bhavati uṣṇaṃ, snigdhaṃ, mātrāvat, jīrṇe vīryāviruddham, iṣṭe deśe, iṣṭasarvopakaraṇaṃ, nātidrutaṃ, nātivilambitam, ajalpan, ahasan, tanmanā bhuñjīta, ātmānamabhisamīkṣya samyak//

Therein, this is the rule for food intake for healthy persons and also for certain patients eating at the proper time what is most wholesome by nature: one should eat warm, unctuous, in proper measure, when [previous food] is digested, non-antagonistic in potency, in a favorable place, with all favorable utensils, not too fast, not too slow, without talking, without laughing, with a focused mind, properly examining oneself.