Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 42
Sanskrit:
अभ्यर्च्याथ नमस्कृत्य पार्षदेभ्यो बलिं हरेत् ।मूलमन्त्रं जपेद् ब्रह्म स्मरन्नारायणात्मकम् ॥ ४२ ॥
ITRANS:
abhyarcyātha namaskṛtyapārṣadebhyo baliṁ haretmūla-mantraṁ japed brahmasmaran nārāyaṇātmakam
Translation:
Having thus worshiped the Lord in the sacrificial fire, the devotee should offer his obeisances to the Lord’s personal associates by bowing down and should then present offerings to them. He should then chant quietly the mūla-mantra of the Deity of the Lord, remembering the Absolute Truth as the Supreme Personality, Nārāyaṇa.