εἰ δὲ τύχῃ τις ἔρδων, μελίφρον' αἰτίαν ῥοαῖσι Μοισᾶν ἐνέβαλε → if someone is successful in his deeds, he casts a cause for sweet thoughts into the streams of the Muses
2ᵉ sg. impér. prés. Moy. épq. de ἴσχω.
ἴσχεο: эп. 2 л. sing. imper. praes. med. к ἴσχω.