Śatapatha Brāhmaṇa ("of a hundred paths") 3.7.1.22

3.7.1.22

atha yūpaśakalamavagūhati | divaḥ sūnurasīti prajā haivāsyaiṣā tasmādyadi yūpaikādaśinī syātsvaṃ svamevāvagūhedaviparyāsaṃ tasya haiṣāmugdhānuvratā prajā jāyate 'tha yo viparyāsamavagūhati na svaṃsvaṃ tasya haiṣā mugdhānanuvratā prajā jāyate tasmādu svaṃ svamevāvagūhedaviparyāsam

Thereupon he inserts a chip of the stake (under the rope) with, 'Thou art the son of the sky.' For it is doubtless the offspring of that (sacrificial stake); hence if there be the full number of eleven stakes, let him insert in each its own (chip) without confounding them; and his offspring is born orderly and not foolish. But whosoever inserts them in confusion, not its own in each, verily his offspring is born disorderly and foolish; therefore let him insert its own in each without confounding them.