अथ काले तयोस्तस्य पुत्रयोर्ज्ञानवानभूत् ।पुण्यो नाम च यो ज्येष्ठो गुणज्येष्ठश्च राघव
In plain words
Then in time, of those two sons of his, it was the one named Puṇya -- the elder, and foremost in virtue as well, O Rāghava -- who became possessed of jñāna.