Shatapatha Brahmana 13.7.1.13

13.7.1.13

athāto dakṣiṇānām madhyam prati rāṣṭrasya yadanyadbrāhmaṇasya vittātsabhūmi sapuruṣam prācī digghoturdakṣiṇā brahmaṇaḥ pratīcyadhvaryorudīcyudgātustadeva hotṛkā anvābhaktāḥ

Now as to the sacrificial fees: whatever there is towards the middle of the kingdom other than the property of the Brâhmana, but including land and men, of that the eastern quarter belongs to the Hotri, the southern to the Brahman, the western to the Adhvaryu, and the northern to the Udgâtri; and the Hotrikas share this along with them.