Aṣṭāṅgahṛdayasaṃhitā

Āyurvedarasāyana

tatra rasānāmutpattimāha-kṣmāmbhognīti| pṛthivyudakābhyāmulbaṇābhyāṃ madhurarasasyotpattiḥ, tejaḥpṛthivībhyāmamlasya, udakatejobhyāṃ lavaṇasya, vāyvākāśābhyāṃ tiktasya, tejovāyubhyāṃ kaṭukasya, vāyupṛthivībhyāṃ kaṣāyasya|