Ἐλεεινότατόν μοι φαίνετ' ἀτυχία φίλου → Miseria amici mihi suprema est miseria → Am meisten Mitleid, scheint's, heischt eines Freundes Leid
confirm: P. βεβαιοῦν, P. and V. ἐμπεδοῦν (Plato, also Ar.).
bear witness to: P. and V. μαρτυρεῖν (acc.).