ὕδασι

From LSJ

Αὐρήλιοι... πατρὶ... καὶ μητρὶ... μνήμης χάριν → The Aurelii, in memory of their father and mother (inscription from Aizonai, Phrygia)

Source

French (Bailly abrégé)

dat. pl. de ὕδωρ.

Russian (Dvoretsky)

ὕδασι: dat. pl. к ὕδωρ.