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ἤϊσαν

Γηράσκω δ᾽ αἰεὶ πολλὰ διδασκόμενος -> I grow old always learning many things
Solon the Athenian

French (Bailly abrégé)

3ᵉ pl. impf. épq. et ion. de εἶμι.

Russian (Dvoretsky)

ἤϊσαν: эп.-ион. (= ᾖεσαν) 3 л. pl. impf. к εἶμι.