The Compendium of Caraka 1.30.21

1.30.21

tatra bhiṣajā pṛṣṭenaivaṃ caturṇāmṛksāmayajuratharvavedānāmātmano 'atharvavede bhaktirādeśyā vedo hyātharvaṇo dānasvastyayanabalimaṅgalahomaniyamaprāyaścittopavāsamantrādiparigrahāccikitsāṃ prāha cikitsā cāyuṣo hitāyopadiśyate //

Then, being thus questioned, the physician should declare his allegiance to the Atharvaveda among the four—the Ṛgveda, Sāmaveda, Yajurveda, and Atharvaveda. For the Atharvan Veda teaches therapeutics by enjoining donation, auspicious rites, oblations, auspicious practices, burnt offerings, observances, expiations, fasts, mantras, and the like; and therapeutics is taught for the benefit of lifespan.