ἑκτεῖος

From LSJ

βορβόρῳ δ' ὕδωρ λαμπρὸν μιαίνων οὔποθ' εὑρήσεις ποτόνonce limpid waters are stained with mud, you'll never find a drink

Source

Spanish (DGE)

-ον sexto μη(νὸς) ἑκτείου Graff.Dip.I 23 (V/VI d.C.).