Śatapatha Brāhmaṇa ("of a hundred paths") 2.3.3.9

2.3.3.9

sa yatsāyamastamite dve āhutī juhoti | tadetābhyām pūrvābhyām padbhyāmetasminmṛtyau pratitiṣṭhatyatha yatprātaranudite dve āhutī juhoti tadetābhyāmaparābhyām padbhyāmetasminmṛtyau pratitiṣṭhita sa enameṣa udyannevādāyodeti tadetam mṛtyumatimucyate saiṣāgnihotre mṛtyoratimuktirati ha vai punarmṛtyum mucyate ya evametāmagnihotre mṛtyoratimuktiṃ veda

Now when, in the evening after sunset, he offers two libations, then he firmly plants himself on that Death with those fore-feet of his; and when, in the morning before sunrise, he offers two libations, then he plants himself on that Death with those hind-feet of his. And when he (the sun) rises, then, in rising, he takes him up and thus he (the sacrificer) escapes that Death. This, then, is the release from death in the Agnihotra: and, verily, he who knows that release from death in the Agnihotra, is freed from death again and again.