Verse 11.5.3.12

śauceyo jñaptaḥ prakṣyāmi tveva bhagavantamiti pṛcaiva prācīnayogyeti sa hovāca yatra ta etasminneva kāle nivāte sarve'gnayo'nugaceyurvettha tadbhayaṃ yadatra juhvato bhavatīti vedeti hovācāpriyamevāsmiṃloke paśyetāpriyamamuṣminyasyaitadaviditaṃ syādvidyābhistvevāhamatāriṣamiti kiṃ viditaṃ kā prāyaścittiriti purā cirādagnim mathitvā prāñcamāhavanīyamuddhṛtya jaghanenāhavanīyamupaviśyāhamevainatpibeyaṃ sa vidyāṃ samṛddham me'gnihotraṃ sarvadevatyam brāhmaṇaṃ hyeva sarvāṇi bhūtānyapiyanti brāhmaṇātpunarvisṛjyante saiva prāyaścittirna tadāgaḥ kurvīyetyatha vā ahametannāvediṣamiti hovāca

Preview of English translation:

12. Shauceya, thus instructed, said, “I would yet ask thee a question, reverend sir.”—“Ask then, Pracinayogya!” he replied. He said, “If at that very time all the fires were to go out, when there should be no wind blowing, dost thou know what danger there would be for him who offers?”—“I know it,” he replied; 'unpleasant things, indeed, he would see in this world, and unpleasant things in yonder world, were he not to know this; but by dint of knowledge I myself have prevailed.'—“What is that knowledge, and what the atonement?” he asked.—“Having, without delay, churned out fire, and taken out an offering-fire towards the east, and sat down behind it, I myself would drink (the Agnihotra milk): I should then know that my Agnihotra would be successful, belonging as it would to all deities, for all beings, indeed, pass into the Brahmana, and from the Brahmana they are again produced. That would be the atonement; and I should not be committing that sin.”—“And, verily, I did not know this,” said (Shauceya).

For a detailled translation, including proper diacritics and footnotes, go the full English translation.