Kaṭha Upaniṣad 1.15

1.15

lokādim agniṃ tam uvāca tasmai yā iṣṭakā yāvatīr vā yathā vā /
sa cāpi tat pratyavadad yathoktam athāsya mṛtyuḥ punar āha tuṣṭaḥ //

[Narrative :] 15. He told him of that fire as the beginning of the world, What bricks, and how many, and how [built]. And he too repeated that, as it was told. Then, pleased with him, Death said again— 16. Delighting, the great soul (mahātman) said to him :—