Valmiki Ramayana 2.77.4
ब्राह्मणेभ्यो ददौ पुत्रः राज्ञः तस्य और्ध्वदैहिकम् ।ततः प्रभात समये दिवसे अथ त्रयोदशे॥
brāhmaṇebhyo dadau putraḥ rājñaḥ tasya aurdhvadaihikam |tataḥ prabhāta samaye divase atha trayodaśe ||
Our plain-language meaning of this verse is waiting for scholar review.