My answer: Bestowal for the sake of bestowal is when I don’t feel pleasure as fulfillment of my personal desires but when I use it solely as fuel to fulfill the act of bestowal.
Question continued: How then does this fuel differ from pleasure if the only thing that exists is the will to receive (Kli) and its fulfillment (Light)?
Answer: If I am using the fuel solely to accomplish my work in fulfilling the other, then my own fulfillment is just fuel for me. If, however, I am going to use the fulfillment to please myself, it means that I am receiving pleasure. Ask yourself: “What is my vehicle working for? What underlies my actions? Who is the benefactor of my efforts?”
From the 1st part of the Daily Kabbalah Lesson 6/24/10, Article “The Matter of Bestowal”