The present headword phrase, a line of hexameter verse, features as proverbial in Zenobius 5.75, where exegetic matter is appended. First the Atthidographer Philochorus (FGrH 328 F195) is cited for a story about three nymphs called Thriai occupying Mt Parnassus; then other sources, unnamed, provide alternative explanations of this thri- vocabulary (cf. theta 490, theta 501); finally the verse itself is connected with Delphic oracular responses.