Sexual magic refers to an ancient science that has been known and protected by the purest, most spiritually advanced human beings, whose purpose and goal is the harnessing and perfection of our sexual forces. A more accurate translation of sexual magic would be "sexual priesthood."
The essence of sexual magic is sexual union while maintaining chastity. In other words, without orgasm or ejaculation.
Sexual Magic is known as different terms according to the tradition: virgine subintroductis, sahaja maithuna (sacred intercourse), karmamudra, etc.
Sexual Magic is practiced in esoteric Christianity. Sexual Magic is practiced in Zen Buddhism. Sexual Magic is practiced amongst the initiated Yogis. Sexual Magic is practiced amongst the Mohammedan Sufis. Sexual Magic was practiced in the Initiatic Colleges of Troy, Egypt, Rome, Carthage, Eleusis. Sexual Magic was practiced by the mysterious Maya, Aztec, Inca, Druids, etc. Therefore, Sexual Magic and the Cosmic Christ are the synthesis of all religions, schools, and sects." —Samael Aun Weor, The Perfect Matrimony
See: What is Sexual Magic?