Śatapatha Brāhmaṇa ("of a hundred paths") 10.4.3.16

10.4.3.16

atha tṛtīyā svayamātṛṇā pañca diśyā viśvajyotiścatasra ṛtavyā daśa prāṇabhṛtaḥ ṣaṭtriṃśaccandasyāścaturdaśa vālakhilyāstā ekasaptatistṛtīyā citiḥ

Then the third (layer):--the naturally-perforated one, five regional ones, a visvagyotis, four seasonal ones, ten prânabhrits, thirty-six khandasyâs, fourteen vâlakhilyas--these seventy-one are (in) the third layer.