Valmiki Ramayana Kishkindha Kanda Sarga 60 Shloka 9
Original Shlokaअष्टौ वर्षसहस्राणि तेनास्मिन्नृषिणा विना। वसतो मम धर्मज्ञा स्वर्गते तु निशाकरे।।4.60.9।।
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धर्मज्ञाः O knowers of dharma, निशाकरे when Nishakara, स्वर्गते after he reached the heaven, तेन by him, ऋषिणा विना devoid of sage, अस्मिन् that, वसतः for me while dwelling, मम for me, अष्टौ eight, वर्षसहस्राणि thousand years.
'O righteous monkeys after the death of sage Nishakara eight thousand years have passed. And I have been living here.