Zohar 3:120b-121a

Jewish Mysticism
Come and see. Once a man performs his worship in this manner, in performance and utterance, and he connects the connection of unification, it is by his actions that the upper and lower entities are blessed. Thus, a man must regard himself after he completes the amida prayer as though he has died from the world, for he is separated from the tree of life, and he gathers his legs into the tree of death, which repays him his charge, as it is said, “and he [Jacob] gathered his feet into the bed [and died]” (Gen. 49-33), for he declared his sins and prayed over them. Now, it is necessary to be gathered unto that tree of death and to bow down and say to it, “To you, God, I offer my breath” (Ps. 25-1). At the beginning, it was given to you as a charge. Now you have bound unification, and performed the performance and utterance as it appropriate, and I will declare my sins. Thus, “I have imparted my breath to you,” truly! And a man regards himself as though he has passed from the world, for his breath is imparted to that place of death, and because of this, it [i.e. Ps. 25-1] does not contain the letter vav, for the letter vav is of the Tree of Life, and this is the tree of death… And thus, he gives himself to death, truly, and imparts his breath to this place. This is not a trust [of the soul] as at night, but rather like one who has truly departed from the world. This adornment requires the intention of the heart, and then, the Holy One, Blessed be He, has mercy on him and forgives and absolves his transgressions. Meritorious is the man who knows how to worship his Master with desire and intention of the heart.

Translated by Hartley Lachter