In 'kavitayen suni-sunayi jayen' (poems are heard and recited), the verb is—

The form 'sunayi jayen' (to be made to hear/recite to someone) is the prernarthak (causative) form of the verb. In Hindi grammar, when an action is performed by causing someone else to do it, the verb becomes causative. 'Sunna' becomes 'sunana' in causative form, indicating making someone listen, which is the causative/prernarthak form.