Ashtangasamgraha 2.102

2.102

uṣṇatvaṃ tena dehasya śītatvaṃ karapādayoḥ ||

satakraṃ sādhitaṃ tailamabhyaṅgāddāhaśītajit ||

tasyāpyetat paraṃ pathyaṃ dīpanaṃ balavarṇakṛt ||

Heat of the body on that account and coldness of the hands and feet. / Oil prepared with buttermilk, through massage, conquers burning sensation and cold. / For that too, this is the supreme wholesome regimen, kindling digestive fire, and producing strength and complexion.