Śatapatha Brāhmaṇa ("of a hundred paths") 10.2.3.3

10.2.3.3

saiṣā vederyoniḥ etasyai vai yonerdevā vedim prājanayannatha ya eṣa vyāmaḥ sā gārhapatyasya yoniretasyai vai yonerdevā gārhapatyam prājanayangārhapatyādāhavanīyam

This is the womb of the Vedi, for it was from that womb that the gods begat the Vedi. And that (space of a) fathom which was (marked off), is the womb of the Gârhapatya, for it was from that womb that the gods begat the Gârhapatya; and from the Gârhapatya the Âhavanîya.