Valmiki Ramayana Bala Kanda Sarga 62 Shloka 17
Original Shlokaश्वमांसभोजिनस्सर्वे वासिष्ठा इव जातिषु। पूर्णं वर्षसहस्रं तु पृथिव्यामनुवत्स्यथ।।1.62.17।।
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सर्वे all of you, श्वमांसभोजिन: feeding on the flesh of dog, पूर्णं complete, वर्षसहस्रम् thousand years, पृथिव्याम् on this earth, वासिष्ठा: इव like sons of Vasishta, जातिषु in (Mushtika) race, अनुवत्स्यथ shall dwell.
All of you shall live on earth for a thousand years, like the sons of Vasishta feeding on the flesh of dogs".