Verse 8.3.1.11

atha diśyā upadadhāti | diśo vai diśyā diśa evaitadupadadhāti tadyābhirado vāyurdigbhiranantarhitābhirupaittā etāstā evaitadupadadhāti tā u evāmūḥ purastāddarbhastambaṃ ca logeṣṭakāścopadadhātyasau vā āditya etā amuṃ tadādityaṃ dikṣvadhyūhati dikṣu cinoti tā yattatraiva syurbahirdhā tatsyurbahirdho vā etadyoneragnikarma yatpurā puṣkaraparṇāttā yadihāhṛtyopadadhāti tadenā yonau puṣkaraparṇe pratiṣṭhāpayati tatho haitā abahirdhā bhavanti tā anantarhitāḥ svayamātṛṇāyā upadadhātyantarikṣaṃ vai madhyamā svayamātṛṇānantarhitāstadantarikṣāddiśo dadhātyuttarā uttarāstadantarikṣāddiśo dadhāti retaḥsicorvelayeme vai retaḥsicāvanayostaddiśo dadhāti tasmādanayordiśaḥ sarvata upadadhāti sarvatastaddiśo dadhāti tasmātsarvato diśaḥ samīcīḥ sarvatastatsamīcīrdiśo dadhāti tasmātsarvataḥ samīcyo diśaḥ

Preview of English translation:

11. He then lays down (five) Dishya (regional bricks). Now the regional ones, doubtless, are the regions: it is the regions he thus bestows (on the air-world). And these are those same regions not separated (from the air) wherewith Vayu on that occasion stepped nigh: it is them he thereby bestows. But prior to these same (bricks) he lays down both the bunch of Darbha grass and the clod-bricks; and these (dishyas) being yonder sun, he thus places yonder sun over the regions, and builds him up upon (or, in) the regions. But were these (laid down) at the same time (as the bunch of grass and the clod-bricks), they would be outside (of the altar); and outside of the womb (foundation), indeed, is that sacrificial work regarding the fire-altar which is done prior to the lotus-leaf. When he now brings and lays down these (bricks), he thereby establishes them in the womb, on the lotus-leaf, and thus these (bricks) are not outside (the fire-altar). He lays them down so as not to be separated from the naturally-perforated one; for the middle naturally-perforated one is the air: he thus places the regions so as not to be separate from the air. Subsequently (to the central brick he lays them down): subsequently to the air he thus sets up the regions. In all (four) directions he places them: he thus places the regions (quarters) in all directions, whence the regions are in all (four) directions. [He places them] on all sides so as to face each other: he thereby makes the regions on all sides face each other, and hence the regions on all sides face each other.

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