Greek proverb: ἰατρὸς ἕλκεσι βρύων

Here's a saying from Apostolius, C2.26, with a Latin version from Clavis Homerica. The image is from Arthur Rackham. Here are some more Apostolius proverbs.

Ἄλλων ἰατρὸς αὐτὸς ἕλκεσι βρύων.
Aliis mederis, ipse plenus ulcerum.
You are doctoring others but you yourself are swollen with sores.