The Compendium of Caraka 6.22.26

6.22.26

kiñcittuvarānurasaṃ tanu laghu śītalaṃ sugandhi surasaṃ ca/
anabhiṣyandi ca yattatkṣitigatamapyaindravajjñeyam//

That which has a slightly astringent aftertaste, is thin, light, cool, fragrant, well-tasting, / and non-obstructive, even though gathered on earth, should be known to be like rainwater.