τῆς
From LSJ
οὐκ ἔστ' ἀλώπηξ ἡ μὲν εἴρων τῇ φύσει ἡ δ' αὐθέκαστος → foxes are not one of a treacherous nature and the other straightforward, the nature of foxes is not for one to be treacherous and the other straightforward
Russian (Dvoretsky)
τῆς: gen. f к ὁ.
