Gopathabrahmana 2.6.16_17

Gopathabrāhmaṇa 2.6.16_17

yad v evaināḥ saṃśaṃsati yan nābhānediṣṭho vālakhilyo vṛṣākapir evayāmarud etāni vā atrokthāni bhavanti tasmān na saṃśaṃsati_