Valmiki Ramayana Sundara Kanda Sarga 26 Shloka 40
Original Shlokaनूनं ममैव शोकेन स वीरो लक्ष्मणाग्रजः।।5.26.40।। देवलोकमितो यातस्त्यक्त्वा देहं महीतले।
1 source checked for this shloka
वीरः heroic one, लक्ष्मणाग्रजःLakshmna's elder brother, सः he, मम my, शोकेनैव suffering, महीतले on this earth, देहम् body, त्यक्त्वा giving up, इतः from here, देवलोकम् to the abode of gods, यातः gone, नूनम् surely.
"Would it be that the heroic elder brother of Lakshmana has gone to the abode of gods unable to find me on this earth?