In the corporeal realm, another law applies: there, the more you give to others, the more you lose strength. And in the spiritual—the more you give, the more you feel strength and progress because in spirituality everything depends on the intention, and in the corporeality everything depends on the action.
Bestowal in intention is when I want to give to the host and I am filled with what He wants to give me. After all, the whole source of energy is concentrated in the Creator, and I receive energy from Him to the extent that I want to give to Him. It turns out that by doing this I open a channel to receive all the good from Him, and I am fulfilled by it.
The one who gives in spirituality, he receives and does not lose! I want to give, but I have nothing to give except intention, and it turns out that in practice I receive because by this I open a channel toward myself.
It all starts with my desire to give to the Host, and I am ready to do anything for this: to receive, to give, to make a restriction on everything I have, and to take into account only the interests of the Host, to be incorporated in Him, to see how to fill Him. Just like a mother who feeds a baby and wants him to get as much milk from her as possible and this fulfills her. It is such a pleasure for her to see how the baby eats that she feels that she is receiving and not giving.
We see such an example even in the corporeal world, and the same relationship should be between people and between man and the Creator.
From the 2nd part of the Daily Kabbalah Lesson 7/12/22, Writings of Baal HaSulam, “The Meaning of Conception and Birth”