ΚΕΦΑΛΗ ΜΔ The Mass of the Phœnix in Liber CCCXXXIII, The Book of Lies by Aleister Crowley.

He makes them as in Liber Legis, and strikes again Eleven times upon the Bell. With the Burin he then makes upon his breast the proper sign.
Behold this bleeding breast of mine
Gashed with the sacramental sign!” [via]