The pure water

Sappho, Fragment 96 (trans. Campbell, Vol. Greek Lyric I) (C6th B.C.):

"Rosy-fingered Selene after sunset, surpasssing all the stars (astra), and her light spreads alike over the salt sea and the flowery fields; the dew is shed in beauty, and roses bloom and tender chervil and flowery melilot."