ει147Εἰ μὴ δύναιο βοῦν ἔλαυνε ὄνον
if you can't [drive] an ox drive a donkey
A proverb in reference to those advising [people] to act in accordance with the resources they have.
Εἰ μὴ δύναιο βοῦν, ἔλαυνε ὄνον· παροιμία ἐπὶ τῶν ὃ κατὰ δύναμιν ἔχουσι πράττειν παραινούντων.