ŚVETĀŚVATARA UPANISHAD · 4.6
द्वा सुपर्णा सयुजा सखाया समानं वृक्षं परिषस्वजाते ।
तयोर् अन्यः पिप्पलं स्वाद्व् अत्त्य् अनश्नन्न् अन्यो अभिचाकशीति ॥
dvā suparṇā sayujā sakhāyā samānaṃ vṛkṣaṃ pariṣasvajāte ।
tayor anyaḥ pippalaṃ svādv atty anaśnann anyo abhicākaśīti ॥
Two birds, inseparable friends, cling to the same tree. One of them eats the sweet fruit, the other looks on without eating.
F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)