The works of Ādi Śaṅkarācārya

Viṣṇusahasranāmastotram

Verse 466

महातेजा महोरगः ।महाक्रतुर्महायज्वा महायज्ञो महाहविः ॥ ८५ ॥

In plain words

Mahātejāḥ — blazing with a splendour nothing else lends Him. Mahoragaḥ — the great serpent, Ananta, endless. Mahākratuḥ — the great rite. Mahāyajvā — the one who performs it. Mahāyajñaḥ — the sacrifice itself. Mahāhaviḥ — and the offering poured into the fire. (85)

Close to the Sanskrit

Of great splendour; the great serpent. The great sacrificial rite, the great sacrificer, the great sacrifice, the great oblation. (85)