लोकादिमग्निं तमुवाच तस्मै या इष्टका यावतीर्वा यथा वा ।स चापि तत्प्रत्यवददथोक्तमथास्य मृत्युः पुनरेवाह तुष्टः ॥ १५ ॥
In plain words
He told him of that fire, the beginning of the worlds -- of what bricks, how many, and in what manner [it is to be built]. And he too, [Naciketas,] repeated it back exactly as it had been told. Then Death, pleased once more at this, spoke again.