Valmiki Ramayana Ayodhya Kanda Sarga 3 Shloka 26
Original Shlokaतेषां मध्ये स राजर्षिर्मरुतामिव वासवः।।2.3.26।। प्रासादस्थो रथगतं ददर्शायान्तमात्मजम्।
1 source checked for this shloka
मरुताम् among maruts, वासवः like Indra, तेषाम् their, मध्ये in the midst, सः that, राजर्षिः sage among kings (Dasaratha), प्रासादस्थः sitting in the palace, रथगतम् sitting in the chariot, आयान्तम् approaching, आत्मजम् son, ददर्श beheld.
The rajarsi, (Dasaratha), seated among the kings like Indra amidst maruts, beheld his son Rama sitting in a chariot and approaching him.