स: that, महामुनि: eminent sage, तमसाया: तीरम् the bank of the river Tamasa, समासाद्य having reached, अकर्दमम् free from mud (pure and clear), तीर्थम् descent into the river दृष्ट्वा having seen, पार्श्वे by the side of, स्थितम् standing, शिष्यम् to the disciple, आह spoke.

The eminent sage Valmiki reached the bank of Tamasa and seen a descent into the river with pellucid waters, spoke to the disciple standing by the side.