Śatapatha Brāhmaṇa ("of a hundred paths") 3.5.2.11

3.5.2.11

tasyāmāghārayati | siṃhyasi svāhetyathāparayoruttarasyāṃ siṃhyasyādityavaniḥ svāhetyathāparayordakṣiṇasyāṃ siṃhyasi brahmavaniḥ kṣatravaniḥ svāheti bahvī vai yajuḥṣvāśīstadbrahma ca kṣatraṃ cāśāsta ubhe vīrye

On that he pours ghee, with the text (Vâg. S. V, 12), 'Thou art a lioness; Hail!' Then on the northern of the two back corners with, 'Thou art a lioness, winning the Âdityas, Hail!' Then on the southern of the two back corners with, 'Thou art a lioness, winning the Brahman, winning the Kshatra, Hail!' Manifold, verily, is the prayer for blessing in the sacrificial texts: by this one he prays for the Brahman (priesthood) and the Kshatra. (nobility), those two vital forces.