Name #677 of 1000 · Viṣṇu Sahasranāma
महायज्ञःmahāyajñaḥ
Mahayajna
The greatest of sacrifices — the silent offering of japa
From shloka 72 · chapter Rāma
महाक्रमो महाकर्मा महातेजा महोरगः ।
महाक्रतुर्महायज्वा महायज्ञो महाहविः ॥
mahākramo mahākarmā mahātejā mahoragaḥ
mahākraturmahāyajvā mahāyajño mahāhaviḥ
Also in this shloka: mahākramaḥ · mahākarmā · mahātejāḥ · mahoragaḥ · mahākratuḥ · mahāyajvā · mahāhaviḥ