Śatapatha Brāhmaṇa ("of a hundred paths") 13.5.2.1

13.5.2.1

eteuktvā yadadhrigoḥ pariśiṣṭam bhavati tadāha vāso'dhivāsaṃ hiraṇyamityaśvāyopastṛṇanti tasminnenamadhi sañjñapayanti sañjñapteṣu paśuṣu patnyaḥ pānnejanairudāyanti catasraśca jāyāḥ kumārī pañcamī catvāri ca śatānyanucarīṇām

Having uttered these two (verses), he pronounces what remains of the Adhrigu. 'A cloth, an upper cloth, and gold,' this is what they spread out for the horse: thereon they 'quiet' (slaughter) it. When the victims have been 'quieted,' the (king's) wives come up with water for washing the feet,--four wives; and a young maiden as the fifth, and four hundred female attendants.