Chāndogya Upaniṣad 6.9.2

6.9.2

te yathā tatra na vivekaṃ labhante 'muṣyāhaṃ vṛkṣasya raso 'smy amuṣyāhaṃ vṛkṣasya raso 'smīti \
evam eva khalu somyemāḥ sarvāḥ prajāḥ sati saṃpadya na viduḥ sati saṃpadyāmaha iti \\609.2\

1. ‘As the bees, my dear, prepare honey by collecting the essences of different trees and reducing the essence to a unity, as they are not able to discriminate “I am the essence of this tree,” “I am the essence of that tree”—even so, indeed, my dear, all creatures here, though they reach Being, know not “We have reached Being.”