εἰσδανείζω
From LSJ
μὴ τὴν ὄψιν καλλωπίζου, ἀλλ' ἐν τοῖς ἐπιτηδεύμασιν ἴσθι καλός → Don't beautify your face, but be beautiful in your habits (Thales, in Diog. Laertius 1.37)
English (LSJ)
A lend at interest as well, Pl.R.555c.
German (Pape)
[Seite 741] durch Leihen auf Zinsen an sich bringen, Plat. Rep. VIII, 555 c.