Shiva Purana
द्वौ सुपर्णौ च सयुजौ समानं वृक्षमास्थितौ ॥ एको ऽत्ति पिप्पलं स्वादु परो ऽनश्नन् प्रपश्यति ॥ ३० ॥
Two birds resort to the same tree. One eats the sweet fruit, the other simply watches without eating.
english translation
dvau suparNau ca sayujau samAnaM vRkSamAsthitau ॥ eko 'tti pippalaM svAdu paro 'naznan prapazyati ॥ 30 ॥
hk transliteration by Sanscript