Odyssey 22.411–412
Odysseus to Eurycleia after the suitors' deaths
ἐν θυμῷ, γρηῦ, χαῖρε καὶ ἴσχεο μηδʼ ὀλόλυζε·
οὐχ ὁσίη κταμένοισιν ἐπʼ ἀνδράσιν εὐχετάασθαι.
Rejoice within your heart, old woman, but restrain yourself; do not cry out.
It is not holy to exult over men who have been killed.