Valmiki Ramayana Kishkindha Kanda Sarga 66 Shloka 4
Original Shlokaअरिष्टनेमिनः पुत्रो वैनतेयो महाबलः। गरुत्मानिति विख्यात उत्तमस्सर्वपक्षिणाम्।।4.66.4।।
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अरिष्टनेमिनः Arishtanemi's, पुत्रः son, सर्वपक्षिणाम् among all birds, उत्तमः greatest, वैनतेयः Vainateya's, महाबलः very powerful, गरुत्मान् इति Garuthman as such, विख्यातः very famous.
'You are the son of Arishtanemi (sage Kasyapa) and Vinata, and your gurulike (elder brother) is Garuda, the greatest among birds. He is powerful and and famous.