Valmiki Ramayana Sundara Kanda Sarga 38 Shloka 46
Original Shlokaभ्रातुरादेशमादाय लक्ष्मणो वा परन्तपः। कस्य हेतोर्न मां वीरः परित्राति महाबलः।।5.38.46।।
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परन्तपः scorcher of enemies, महाबलः mighty, वीरः hero, लक्ष्मणो वा even Lakshmana, भ्रातुः brother, आदेशम् order, आदाय after taking, कस्य हेतोः for what reason, माम् me, न परित्राति not rescue.
"Or, why does the mighty hero, Lakshmana, who is a scorcher of enemies, not come to my rescue taking the orders from his brother?