Shatapatha Brahmana 6.6.1.12

6.6.1.12

athaudgrabhaṇāni juhoti | audgrabhaṇairvai devā ātmānamasmāllokātsvargaṃ lokamabhyudagṛhṇata yadudagṛhṇata tasmādaudgrabhaṇāni tathaivaitadyajamāna audgrabhaṇairevātmānamasmāllokātsvargaṃ lokamabhyudgṛhṇīte

He then offers the Audgrabhana (libations), for by the Audgrabhanas (elevatory libations) the gods raised themselves from this world to the heavenly world: and inasmuch as (thereby) they raised themselves (ud-grabh), they are called 'audgrabhana;'--and in like manner does the Sacrificer, by means of the Audgrabhanas, now raise himself from this world to the heavenly world.