The Bornless Ritual, also known as the Preliminary Invocation, is a ritual of Western ceremonial magic generally used as an Invocation of the Knowledge and Conversation of the Holy Guardian Angel, since it was introduced as such by the Hermetic Order of the Golden Dawn.
Here is an example stanza as translated by Hans Dieter Betz:
I summon you Headless One, who created earth and heaven, who created night and day. [...] I am the Favor of the Aion; my name is a heart encircled by a serpent.
- Betz, Hans Dieter (1996). "PGM 96-172: Stele of Jeu the hieroglyphicist in his letter". The Greek Magical Papyri in Translation. Vol. 1 (2nd ed.). Chicago & London: University of Chicago Press. p. 103. ISBN 978-0226044477.
- Sumner, Alex (2004). "The Bornless Ritual". Journal of the Western Mystery Tradition. 1 (7).
- DuQuette, Lon Milo (2003). The Magick of Aleister Crowley: A Handbook of the Rituals of Thelema. York Beach, Maine: Weiser Books.
- Stratton-Kent, Jake (2012). The Headless One. West Yorkshire: Hadean Press.