The text was adopted in the Decretum of Ivo of Chartres and eventually in Gratian's authoritative Corpus juris canonici of c. 1140 (causa 26, quaestio 5, canon 12). Because it was included in Gratian's compilation, the text was treated as canon law for the remaining part of the High Middle Ages, until Roman Catholic views on European witchcraft began to change dramatically in the late medieval period.Alan Charles Kors, Edward Peters, Witchcraft in Europe, 400-1700: a documentary history, University of Pennsylvania Press, 1972, pp. 28-31; 2nd revised ed. 2001, , pp. 72-77.
