Valmiki Ramayana Aranya Kanda Sarga 57 Shloka 16
Original Shlokaसञ्जगर्हेऽथ तं भ्राता ज्येष्ठो लक्ष्मणमागतम्।।3.57.16।। विहाय सीतां विजने वने राक्षससेविते।
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अथ at that time, ज्येष्ठः भ्राता elder brother Rama, राक्षससेविते in a place infested with demons, विजने in a desolate, वने forest, सीताम् Sita, विहाय leaving, आगतम् one who came, तं लक्ष्मणम् to that Lakshmana, सञ्जगर्हे rebuked.
In this situation Rama the elder brother rebuked Lakshmana for having left Sita behind in a desolate forest infested with demons.