Valmiki Ramayana Aranya Kanda Sarga 9 Shloka 30
Original Shlokaअक्षया तु भवेत्प्रीतिश्श्वश्रूश्वशुरयोर्मम।।3.9.30।। यदि राज्यं परित्यज्य भवेस्त्वं निरतो मुनिः।
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त्वम् you, राज्यम् kingdom, परित्यज्य having given up, निरतः permanent, मुनिः an ascetic, भवेः you, यदि if, मम to me, श्वश्रूश्वशुरयोः to motherinlaw and fatherinlaw, अक्षया unlimited, प्रीतिः joy, भवेत् will be.
You would have been on unlimited source of joy to my fatherinlaw and motherinlaw had you permanently renounced the kingdom for the life of an ascetic.