Valmiki Ramayana Aranya Kanda Sarga 68 Shloka 3
Original Shlokaअयमस्य शरीरेऽस्मिन्प्राणो लक्ष्मण विद्यते। तथा हि स्वरहीनोऽयं विक्लबस्समुदीक्ष्यते।।3.68.3।।
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लक्ष्मण Lakshmana, अस्य his, अस्मिन् शरीरे in this body, प्राणः life, (अतिखिन्नः suffering from intense pain), विद्यते appears, तथा हि like that, अयम् he, स्वरहीनः faint voice, विक्लबः frightened, समुदीक्ष्यते feeling excruciating pain.
O Lakshmana, it appears he is frightened and is experiencing excruciating pain in the body. His voice sounds faint, too.