Śatapatha Brāhmaṇa ("of a hundred paths") 8.1.1.2

8.1.1.2

tā daśa-daśopadadhāti | daśa vai prāṇā yadu vā api bahu kṛtvo daśa-daśa daśaiva tṛtpañca kṛtvo daśa-daśopadadhāti pañca vā etānpaśūnupadadhāti daśa-daśa vā ekaikasminpaśau prāṇāstadeṣu sarveṣu prāṇāndadhātyanantarhitāḥ paśubhya upadadhātyanantarhitāṃstatpaśubhyaḥ prāṇāndadhāti sarvata upadadhāti sarvata evaiṣvetatprāṇāndadhāti

He lays them down by ten and ten, for there are ten vital airs; and even though 'ten-ten' may mean many, times, here they mean only ten. Five times he puts on ten (bricks) each time; for it is those five (kinds of sacrificial) animals he bestows, and there are ten vital airs in each.animal: upon all of them he thus bestows the vital airs. He lays down (the bricks) so as not to be separated from the animals: he thus bestows vital airs not separated from the animals. He lays them down on every side: on every side he thus bestows on them (orifices of) the vital airs.