caraṇau śirasā namet

chandamsi-mantras in the Vedas, like the Hare Krsna maha-mantra and the Gayatri mantra; adhiyita-one should chant or read regularly; guroh-from the spiritual master; ahutah-being addressed or called (by him); cet-if; su-yantritah-faithful, well behaved; upakrame-in the beginning; avasane-at the end (of reading Vedic mantras); ca-also; caranau-at the lotus feet; sirasa-by the head; namet-one should offer obeisances.