The Compendium of Caraka 1.26.39

1.26.39

saumyāḥ khalvāpo 'antarikṣaprabhavāḥ prakṛtiśītā laghvyāścāvyaktarasāśca tāstvantarikṣādbhraśyamānā bhraṣṭāśca pañcamahābhūtaguṇasamanvitā jaṅgamasthāvarāṇāṃ bhūtānāṃ mūrtīrabhiprīṇayanti tāsu mūrtiṣu ṣādabhimūrcchanti rasāḥ //

Water, indeed, is gentle by nature, originating from the atmosphere, cool by nature, light, and of unmanifest taste. But falling and fallen from the atmosphere, endowed with the qualities of the five great elements, it gratifies the bodies of animate and inanimate living beings. In those bodies, the six tastes manifest.