Valmiki Ramayana Yuddha Kanda Sarga 30 Shloka 31
Original Shlokaलक्ष्मणश्चात्रधर्मात्मामातङ्गानामिवर्षभः । यस्यबाणपथंप्राप्यनजीवेदपिवासवः ।।6.30.31।।
1 source checked for this shloka
यस्य his, बाणपथम् within the range of arrows, प्राप्य strike, वासवःअपि even Indra, नजीवेत् not be alive, धर्मात्मा righteous, मातङ्गानाम् proud elephant, ऋषभःइव like a bull, लक्ष्मणश्च Lakshmana's, अत्र here.
"Here is righteous Lakshmana, who is like a bull (foremost) resembling a proud elephant. Even Indra will not be alive with in the range of his arrows when he strikes."