Valmiki Ramayana Ayodhya Kanda Sarga 17 Shloka 9
Original Shlokaयथास्म पोषिताः पित्रा यथा सर्वैः पितामहैः।।2.17.9।। ततस्सुखतरं रामे वत्स्यामस्सति राजनि।
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पित्रा by father (Dasaratha), यथा as, पोषिताः स्म we were brought up (ruled), सर्वैः all, पितामहैः grandfathers, यथा as, रामे Rama, राजनि सति when he becomes king, ततः सुखतरम् with greater happiness, वत्स्यामः we shall live.
Once Rama assumes kingship, we shall all live in happiness greater than when we were ruled by his father and grandfather.