From Egyptian Secrets of Albertus Magnus, Joseph H. Peterson edition:
For Bony Excrescences of Horses.
Make a dough of fine wheat flour, put this as a poultice upon the horse's leg for a period of three days. If the spavin is still open on the fourth day, open the bandage, and apply hog manure, wheat flour with saliva upon the injury and let this remain three or four days, and the spavin will be released from the true bone.
The grimoire Egyptian Secrets of Albertus Magnus lists this spell.
Timeline of related events
1725Publication of Egyptian Secrets of Albertus Magnus (lists this spell)
1869English-language translation of Egyptian Secrets (lists this spell)