Ashtangasamgraha 2.6

2.6

hīnānyaveṣa ācāryaṃ paryupāsīta rājavat |

śayīta supta evāsminnuttiṣṭhetāsya pūrvataḥ ||

tasmāt pīnakapolapayodharatā kṛṣṇauṣṭhacūcukatvaṃ ca |

stanāśrayameva ca kaphoparañjitaṃ stanyatāmupagataṃ prasūtāyāḥ pūnarāhārarasenāpyāyate ||

viśleṣa iva sandhīnāṃ sāda ūrvoḥ kaṭīgrahaḥ ||

snehādvātaṃ ghṛtaṃ tulyaṃ yogasaṃskārataḥ kapham ||

bhavati cātra ||

Wearing inferior and modest attire, he should attend upon the preceptor like a king; / he should lie down only after he has slept, and rise before him.

Therefore, there is plumpness of the cheeks and breasts, and blackness of the lips and nipples.
Resting in the breasts alone, colored by kapha, and having attained the state of breast milk, it is nourished again in a woman who has given birth by the nutritional fluid of food.
A loosening, as it were, of the joints, debility of the thighs, and stiffness of the lower back.
By virtue of unctuousness, ghee is equal to vāta; by virtue of combination and processing, to kapha.

And on this it is said: