Passage 9.37.4
ἐλθόντι δὲ ἐς Δελφοὺς καὶ ἐρομένῳ περὶ παίδων χρᾷ τάδε ἡ Πυθία· Ἐργῖνε Κλυμένοιο πάι Πρεσβωνιάδαο, ὄψʼ ἦλθες γενεὴν διζήμενος, ἀλλʼ ἔτι καὶ νῦν ἱστοβοῆι γέροντι νέην ποτίβαλλε κορώνην. λαβόντι δὲ αὐτῷ νέαν γυναῖκα κατὰ τὸ μάντευμα Τροφώνιος γίνεται καὶ Ἀγαμήδης .
When he came to Delphi and asked about offspring, the Pythia delivered this oracle: "Erginus, son of Clymenus from Presbon, Late have you come in search of progeny; Yet even now, fix a youthful bride To your aged, ox-driving plow." Following the prophecy, he took a young wife, and thus were born to him Trophonius and Agamedes.