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tibi

Τὸ νικᾶν αὐτὸν αὑτὸν πασῶν νικῶν πρώτη τε καὶ ἀρίστη -> The first and best victory is to conquer self.
Plato, Laws 626e

Latin > English (Lewis & Short)

tĭbī̆: v. tu.

Latin > French (Gaffiot)

tĭbĭ et tĭbī, dat. de tu.