Shatapatha Brahmana 6.8.2.11

6.8.2.11

atha prāyaścittī karoti | sarvebhyo vā eṣa etaṃ kāmebhya ādhatte tadyadevāsyātra kāmānāṃ vyavacidyate 'gnāvapo 'bhyavahriyamāṇe tadevaitatsaṃtanoti saṃdadhātyubhe prāyaścittī karoti ye evāgnāvanugate tasyokto bandhuḥ

He then performs two expiations; for it is for (the obtainment of) all his desires that he sets up that (fire);--thus whatever part of his desires is here cut off when the fire is thrown into the water, that he thereby joins together and restores. He performs both expiations which (are performed) when the fire has gone out: the significance of this has been explained.