Śatapatha Brāhmaṇa ("of a hundred paths") 7.2.1.10

7.2.1.10

namaḥ su te nirṛte tigmateja iti | tigmatejā vai nirṛtistasyā etannamaskarotyayasmayaṃ vicṛtā bandhametamityayasmayena ha vai tam bandhena nirṛtirbadhnāti yam badhnāti yamena tvaṃ yamyā saṃvidānetyagnirvai yama iyaṃ yamyābhyāṃ hīdaṃ sarvaṃ yatamābhyāṃ tvaṃ saṃvidānetyetaduttame nāke adhi rohayainamiti svargo vai loko nākaḥ svarge loke yajamānamadhirohayetyatat

'Homage be unto thee full well, O sharp-edged Nirriti!' for Nirriti is indeed sharp-edged: to her he thereby renders homage;--'loose thou this iron bond!' for it is indeed with an iron bond that Nirriti binds him whom she binds;--'being of one mind with Yama and Yamî,'--Yama doubtless is Agni, and Yam is this (earth), and by these two everything here is kept in check: thus, 'being of one mind with those two,'--'raise him unto the highest firmament!' the firmament is the heavenly world: thus, 'raise the Sacrificer up to the heavenly world!'