Valmiki Ramayana Yuddha Kanda Sarga 59 Shloka 91
Original Shlokaपितृमहात्म्यसंयोगात्मनश्चापितेजसा । जानुभ्यानुपतद्भूमौनतुप्राणैर्व्ययुज्यत ।।6.59.91।।
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पितृमहात्म्यसंयोगात् by virtue of father's greatness, आत्मनः himself, तेजसाचापि own power, जानुभ्याम् knees, भूमौ to the ground, न्यपतत् fell, तु but, प्राणैः life, नव्ययुज्यत not ceased.
By virtue of his father's greatness and his own power, his life did not cease but he fell on the ground.