Verse 8.7.3.21

tā asya sūdadohasa iti | āpo vai sūdo'nnaṃ dohaḥ somaṃ śrīṇanti pṛśnaya ityannaṃ vai pṛśni janmandevānāmiti saṃvatsaro vai devānāṃ janma viśa iti yajño vai viśo yajñe hi sarvāṇi bhūtāni viṣṭāni triṣvā rocane diva iti savanāni vai trīṇi rocanāni savanānyetadāhānuṣṭubhā vāgvā anuṣṭubvāgu sarve prāṇā vācā caivaine etatprāṇena ca saṃtanoti saṃdadhāti sā vā eṣaikā satī sūdadohāḥ sarvā iṣṭakā anusaṃcarati prāṇo vai sūdadohāstasmādayameka eva prāṇaḥ santsarvāṇyaṅgāni sarvamātmānamanusaṃcarati

Preview of English translation:

21. “Those his well-like milking ones”—a well (suda) means water, and milking means food;—“the speckled ones mix the Soma,”—the speckled (cow) means food;—“at the birth of the gods,”—the birth of the gods is the year;—“the tribes,” the tribes (vish), doubtless, are the sacrifice, for all beings are ranged (vishta) under the sacrifice;—“in the three spheres of the heavens,”—the three spheres of the heavens, doubtless, are the (three) pressings (of Soma): he thus means the pressings. With an anushtubh verse (he performs this rite), for the Anushtubh is speech, and speech (includes) all vital airs; and by means of speech, that is vital air, he thus makes these two (bricks) continuous, and joins them together. This same Sudadohas, whilst being a single (verse), extends over all the bricks, whence—the Sudadohas being the vital air—this vital air, whilst being one only, extends over all the limbs, over the whole body.

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