Valmiki Ramayana Ayodhya Kanda Sarga 58 Shloka 23
Original Shlokaअतिक्रान्तवया राजा मास्मैनं व्यवरोरुधः। कुमार राज्ये जीव त्वं तस्यैवाज्ञाप्रवर्तनात्।।2.58.23।।
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राजा king Dasaratha, अतिक्रान्तवयाः is advanced in age, एनम् him, मा स्म व्यवरोरुधः do not restrict him, त्वम् you, तस्यैव that king's, आज्ञाप्रवर्तनात् carrying out the commands, कुमारराज्ये as prince regent, जीव live.
'The king is advanced in age. Do not restrict him in any manner. Carry out his orders as prince regent, and live happily'.