Sārathi
  1. 6.17

    युक्ताहारविहारस्य युक्तचेष्टस्य कर्मसु।
    युक्तस्वप्नावबोधस्य योगो भवति दुःखहा ॥

    yuktāhāra-vihārasya yukta-cheṣhṭasya karmasu
    yukta-svapnāvabodhasya yogo bhavati duḥkha-hā

    Yoga becomes the destroyer of pain for him who is moderate in eating and recreation (such as walking, etc.), who exercises moderation in action, and who is moderate in sleep and wakefulness.
  2. 17.8

    आयुःसत्त्वबलारोग्यसुखप्रीतिविवर्धनाः।
    रस्याः स्निग्धाः स्थिरा हृद्या आहाराः सात्त्विकप्रियाः ॥

    āyuḥ-sattva-balārogya-sukha-prīti-vivardhanāḥ
    rasyāḥ snigdhāḥ sthirā hṛidyā āhārāḥ sāttvika-priyāḥ

    The foods that increase life, purity, strength, health, joy, and cheerfulness (good appetite), which are savory, oily, substantial, and agreeable, are dear to the Sattvic (pure) people.
  3. 17.9

    कट्वम्ललवणात्युष्णतीक्ष्णरूक्षविदाहिनः।
    आहारा राजसस्येष्टा दुःखशोकामयप्रदाः ॥

    kaṭv-amla-lavaṇāty-uṣhṇa- tīkṣhṇa-rūkṣha-vidāhinaḥ
    āhārā rājasasyeṣhṭā duḥkha-śhokāmaya-pradāḥ

    The foods that are bitter, sour, salty, overly hot, pungent, dry, and burning are liked by the Rajasic and are productive of pain, grief, and disease.
  4. 17.10

    यातयामं गतरसं पूति पर्युषितं च यत्।
    उच्छिष्टमपि चामेध्यं भोजनं तामसप्रियम् ॥

    yāta-yāmaṁ gata-rasaṁ pūti paryuṣhitaṁ cha yat
    uchchhiṣhṭam api chāmedhyaṁ bhojanaṁ tāmasa-priyam

    That which is stale, tasteless, putrid, rotten, rejected, and impure is the food liked by the Tamasic.
  5. 15.14

    अहं वैश्वानरो भूत्वा प्राणिनां देहमाश्रितः।
    प्राणापानसमायुक्तः पचाम्यन्नं चतुर्विधम् ॥

    ahaṁ vaiśhvānaro bhūtvā prāṇināṁ deham āśhritaḥ
    prāṇāpāna-samāyuktaḥ pachāmy annaṁ chatur-vidham

    Having become the fire Vaisvanara, I abide in the bodies of living beings and, associated with the Prana and the Apana, digest the fourfold food.