Zohar 1:41a

Jewish Mysticism
R. Simeon said- Who is the one who knows how to arrange the prayer of his Master like Moses who when he needed it arranged a long prayer and when he needed it arranged a short prayer? R. Simeon said- I have found in the books of the ancients the order of the secret of secrets in one bond, the times when it is necessary to arrange one’s prayer as is appropriate, and to bind the knots to ameliorate [the judgments of] the Master as is appropriate, and to know how to unify the perfect unity, to rend the heavens and to open the gates and doors so that no one will stay his hand. Happy are the righteous who know how to appease their Master, to annul the decrees, to cause the Presence to dwell in the world, to draw down blessings.

Translated by Elliot Wolfson in “Forms of Visionary Ascent and Ecstatic Experience,” in Gershom Scholem’s Major Trends in Jewish Mysticism 50 Years After 209-235. Edited by J. Dan and P. Schafer, Tubingen- J. C. B. Mohr, 1993.