The Bhadrayaka Upanishad is one of the older, "primary" (mukhya) Upanishads commented upon by Shankara. It is associated with the White Yajurveda and the Shatapatha Brahmana. It figures as number 10 in the Muktika canon of 108 Upanishads.
You are what your deep driving desire is.
People see his pleasure-ground; him no one sees at all.
As an eagle, weary after soaring in the sky, folds its wings and flies down to rest in its nest, so does the shining Self enter the state of dreamless sleep, where one is freed ...
Take this action
Or do this