Kabbalah zu Schemot 23:76

And there is the mark of Shad"ai, that is Metatro"n as servant, and many servants are dependent on him, that he is the appointed one on those who are servants in order to receive a reward (see Avot 1:3). Metatro"n and his servants are appointed over them. And regarding them it is said: "so that your ox and your donkey and your slave and your female slave rest" (Exodus 23:12). But those who observe/follow/serve the commandments without the intention of receiving a reward, those are the children of the King and the Matronita. And they are the crowns and the adornments on the head, that serve on the common days. And regarding them it is said "and those who make use of the crown disappear" (Avot 1:13) and "the stranger that comes" on them "will die" since the Shabatot are called for the servants.

Rabbi Elazar opened with the verse, "Open you my eyes, that I may behold wondrous things out of Your Torah" (Tehilim 119:17). How foolish men are, for they do not know, and do not seek to be occupied with, Torah. Torah is the whole life. All freedom and all goodness in this world and in the World to Come are contained within it. It is life in this world; namely, they may merit full days in this world, as it is written, "The number of your days I will fulfill" (Shemot 23:26). And one will merit long days in the World to Come, for this whole life is a life of joy, life without sadness, life that is real life, freedom in this world, freedom from everything, because other nations cannot rule over anyone who is engaged in the study of Torah.