Valmiki Ramayana 5.39.11

नित्यमुत्साहयुक्ताश्च वाचः श्रुत्वा त्वयेरिताः ।वर्धिष्यते दाशरथेः पौरुषं मदवाप्तये॥

nityamutsāhayuktāśca vācaḥ śrutvā tvayeritāḥ |vardhiṣyate dāśaratheḥ pauruṣaṃ madavāptaye ||

Our plain-language meaning of this verse is waiting for scholar review.