Valmiki Ramayana Aranya Kanda Sarga 51 Shloka 33
Original Shlokaएवमुक्त्वा शुभं वाक्यं जटायुस्तस्य रक्षसः।।3.51.33।। निपपात भृशं पृष्ठे दशग्रीवस्य वीर्यवान्।
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वीर्यवान् brave,जटायुः Jatayu, एवम् in that manner, शुभम् auspicious (cautious), वाक्यम् words, उक्त्वा having said, रक्षसः of that demon, तस्य रावणस्य पृष्ठे at Ravana's back, भृशम् repeatedly, निपपात dashed.
Brave Jatayu having thus said these cautious words to the demon dashed against his back again and again.