Corpus of Electronic Texts Edition
The Second Battle of Moytura (Author: [unknown])

section 34

That cure seemed evil to Dian-cecht. He flung a sword on the crown of his son's head and cut the skin down to the flesh. The lad healed the wound by means of his skill. Dian-cecht smote him again and cut the flesh till he reached the bone. The lad healed this by the same means. He struck him the third blow and came to the membrane of his brain. The lad healed this also by the same means. Then he struck the fourth blow and cut out the brain, so that Miach died, and Dian-cecht said that the leech himself could not heal him of that blow.