Valmiki Ramayana Ayodhya Kanda Sarga 1 Shloka 3
Original Shlokaतत्रापि निवसन्तौ तौ तर्प्यमाणौ च कामतः। भ्रातरौ स्मरतां वीरौ वृद्धं दशरथं नृपम्।।2.1.3।।
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वीरौ heroes, भ्रातरौ both brothers, तत्र there, निवसन्तौ while living, कामत: of their own accord, तर्प्यमाणौ चापि even though satisfied, वृद्धम् aged, दशरथं नृपम् king Dasaratha, स्मरताम् (constanly) remembered.
Though both the heroic brothers stayed there satisfied on their own they constantly remembered their aged father.