ἐν πίθῳ ἡ κεραμεία γιγνομένη → trying to run before you can walk, the potter's art starting on a big jar
Ep. for ἐπῆν, 3sg. impf. of ἔπειμι (A), Il.20.276.
ἐπέην: Ἐπικ. ἀντὶ ἐπῆν, γ΄ ἑν. τοῦ παρατ. τοῦ ἔπειμι (εἰμί), Ἰλ. Υ. 276.