Śatapatha Brāhmaṇa ("of a hundred paths") 5.3.1.6

5.3.1.6

atha śvo bhūte | grāmaṇyo gṛhānparetya mārutaṃ saptakapālam puroḍāśaṃ nirvapati viśo vai maruto vaiśyo vai grāmaṇīstasmānmāruto bhavatyetadvā asyaikaṃ ratnaṃ yadgrāmaṇīstasmā evaitena sūyate taṃ svamanapakramiṇaṃ kurute tasya pṛṣangaurdakṣiṇā bhūmā vā etadrūpāṇāṃ yatpṛṣato gorviśo vai maruto bhūmo vai viṭtasmātpṛṣangaurdakṣiṇā

And on the following day, he goes to the house of the Headman (Grâmanî), and prepares a cake on seven potsherds for the Maruts; for the Maruts are the peasants, and the headman is a peasant: therefore it is for the Maruts. And he, the headman, assuredly is one of his (the king's) jewels: it is for him that he is thereby consecrated, and him he makes his own faithful follower. The sacrificial fee for this (jewel) is a spotted bullock, for in such a spotted bullock there is abundance of colours; and the Maruts are the clans (or peasants), and the clan means abundance; therefore the sacrificial fee is a spotted bullock.