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αὐτῷ

Μὴ φῦναι τὸν ἅπαντα νικᾷ λόγον -> Not to be born is, past all prizing, best.
Sophocles, Oedipus Coloneus l. 1225

French (Bailly abrégé)

dat. de αὐτός.

Russian (Dvoretsky)

αὐτῷ: dat. к αὐτός.