Valmiki Ramayana Ayodhya Kanda Sarga 6 Shloka 24
Original Shlokaचिरं जीवतु धर्मात्मा राजा दशरथोऽनघः। यत्प्रसादोनभिषिक्तं तु रामं द्रक्ष्यामहे वयम्।।2.6.24।।
1 source checked for this shloka
यत्प्रसादेन by whose grace, अभिषिक्तम् having been coronated, रामम् of Rama, द्रक्ष्यामहे we are beholding, धर्मात्मा virtuous, अनघः sinless, दशरथः राजा king Dasaratha, चिरम् for long, जीवतु let live.
May the virtuous and sinless king Dasaratha live long by whose grace we are beholding (going to behold) Rama's coronation.