Valmiki Ramayana Sundara Kanda Sarga 38 Shloka 59
Original Shlokaआनुकूल्येन धर्मात्मा त्यक्त्वा सुखमनुत्तमम्। अनुगच्छति काकुत्स्थं भ्रातरं पालयन्वने।।5.38.59।।
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धर्मात्मा righteous self, अनुत्तमम् great, सुखम् pleasures, त्यक्त्वा having given up, भ्रातरम् his brother, काकुत्स्थम् Kakustha Rama, वने to the forest, आनुकूल्येन in his favour, पालयन् while serving, अनुगच्छति followed.
"Great, righteous Lakshmana had given up his pleasures and followed his brother Rama in his favour into the forest to be able to serve him.