Ashtangasamgraha 6.30

6.30

āsyaśoṣāṅgasādādyā mṛtyurvā tadalābhataḥ |

na hi toyādvinā vṛttiḥ svasthasya vyādhitasya vā ||

evaṃ ca kṛtvānnamayā eva dehe sarve bhāvāḥ |

tenaiva cedamevaṃ cireṇa vyāptamantarbahiḥ śarīrayantramanavaratapravāheṇa svāsthyabalopacayayuktaṃ yāvatkarmopādānaṃ yāpyate |

anyathā tvannarasotkṣepaṇādvibaddhasrotasā vā yathāvadanabhisandhīyamānadhātupravāhamantarā vyavacchidyate |

vyādhibhājanaṃ vā bhavati ||

pittena raktaṃ pītaṃ vā nabhaḥ paśyan viśettamaḥ ||

kalkitairlepite rūḍhe nikṣipet ghṛtabhājane ||

śirasthe nāvanaṃ dhūmaḥ pracchādyaṃ sarṣapaiḥ śiraḥ ||

saṅkarakūṭe snānam |

mantraśca ||

Dryness of the mouth, prostration of the limbs, and so on, or even death [result] from the lack of it; / for without water there is no sustenance for the healthy or the diseased.
And considering it thus, all entities in the body are indeed composed of food.
By that alone, this bodily mechanism—pervaded over time inside and outside by a continuous flow, endowed with health, strength, and nourishment—is sustained as long as the reception of actions [lasts].
Otherwise, due to the ejection of the food-juice or with blocked bodily channels, the stream of bodily tissues that is not properly connected is interrupted mid-way,
or it becomes a receptacle for disease.
Seeing the sky red or yellow due to pitta, he enters darkness.
When smeared with pasted [herbs] and healed, one should place [the patient] in a vessel filled with ghee.
When [it is] located in the head, errhine [is used], and smoke; the head should be covered with mustard seeds.
Bathing at a crossroads [or rubbish heap].
And the mantra: