Îsâ-Upanishad

The text opens by stating that all that moves on earth is to be hidden in the Lord (the Self); once one has surrendered all this, one may enjoy, and should not covet another's wealth. It says a man may wish to live a hundred years performing works, and work will not cling to him. It names the worlds of the Asuras, covered with blind darkness, entered after death by those who have destroyed their self. It describes the Self as swifter than thought, unreached by the Devas, both stirring and not stirring, far and near, inside and outside all. He who beholds all beings in the Self, and the Self in all beings, never turns away. It describes the Self as encircling all, bright, pure. It contrasts those worshipping not-knowledge and knowledge, and knowing both overcomes death and obtains immortality; similarly regarding the cause and non-cause. It addresses Pûshan to open the golden disk, and Yama, Sûrya; then breath goes to air, the body to ashes; Mind is called to remember deeds. Finally Agni is asked to lead on to wealth by a good path.