Valmiki Ramayana Bala Kanda Sarga 22 Shloka 11
Original Shlokaअध्यर्धयोजनं गत्वा सरय्वा दक्षिणे तटे। रामेति मधुरां वाणीं विश्वामित्रोऽभ्यभाषत।।1.22.11।।
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अध्यर्धयोजनम् more than a half Yojana, गत्वा having travelled, सरय्वा: river Sarayu, दक्षिणे तटे on southern bank, वश्वामित्र: Viswamitra, राम इति addressing him as "O Rama", मधुराम् sweet, वाणीम् words, अभ्यभाषत spoke.
After crossing a distance of over half a yojana on the southern bank of Sarayu, Viswamitra addressed Rama sweet in a gentle voice.