Verse 8.6.1.18

atha paścāt | ayam paścādviśvavyacā ityasau vā ādityo viśvavyacā yadā hyevaiṣa udetyathedaṃ sarvaṃ vyaco bhavati tadyattamāha paścāditi tasmādetam pratyañcameva yantam paśyanti tasya rathaprotaścāsamarathaśca senānīgrāmaṇyāviti vārṣikau tāvṛtū pramlocantī cānumlocantī cāpsarasāviti dikcopadiśā ceti ha smāha māhitthirahorātre tu te te hi pra ca mlocato'nu ca mlocato vyāghrā hetiḥ sarpāḥ prahetiriti vyāghrā haivātra hetiḥ sarpāḥ prahetistebhyo namo astvititasyokto bandhuḥ

Preview of English translation:

18. Then behind (in the west, he lays down a brick), with (Vajasaneyi Samhita XV, 17), “This one behind, the all-embracer,”—the all-embracer, doubtless, is yonder sun; for as soon as he rises all this embracing space comes into existence; and because he speaks of him as (being) “behind,” therefore one sees him only when he goes towards the back (west);—“and Rathaprota (fixed on the chariot) and Asamaratha (of matchless chariot), his commander and chieftain;” these are the two rainy months;—“and the nymphs Pramlocanti (the setting one) and Anumlocanti (the rising one),”—“quarter and intermediate quarter,” said Mahitthi, but they are day and night, for these two set and rise; 'tigers the shaft, snakes the missile,' for indeed tigers are here the shaft, and snakes the missile;—“to them be homage . . .!” the import of this has been explained.

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