Śatapatha Brāhmaṇa ("of a hundred paths") 3.9.2.10

3.9.2.10

athāto gṛhṇātyeva | haviṣmatīrimā āpa iti yajñasya hyāsu rasaḥ prāviśattasmādāha haviṣmatīrimā āpa iti haviṣmān āvivāsatīti haviṣmānhyenā yajamāna āvivāsati tasmādāha haviṣmān āvivāsatīti

He takes therefrom with the text (V4;. S. VI, 23), 'Rich in havis are these waters,'--for the sap of the sacrifice entered into them, wherefore he says, 'Rich in havis (sacrificial food) are these waters;'--'One rich in havis wooeth for (them),' for the sacrificer, rich in havis, woos for (wishes to obtain) them; wherefore he says, 'One rich in havis wooeth for (them).'