Valmiki Ramayana Aranya Kanda Sarga 13 Shloka 16
Original Shlokaधन्यस्ते जनको राम स राजा रघुनन्दन।।3.13.16।। यस्त्वया ज्येष्ठपुत्रेण ययातिरिव तारितः।
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रघुनन्दन delight of the Raghu family, राम Rama, ते जनकः your father, सः he, राजा the king, धन्यः blessed, यः who, ज्येष्ठपुत्रेण with the eldest son, त्वया by you, ययातिरिव like Yayati, तारितः is liberated.
O Rama, joy of the Raghu family with the eldest son like you, your father is blessed and liberated like king Yayati.