Institutio canonicorum Aquisgranensis

The Institutiones Aquisgranenses or Aachen rule (s ) was a 816 on the imperial synod of Aachen law passed extensive body of canons, which was created analogous to the Rule of St. Benedict and the Consuetudines monasterischen religious communities. She was prescribed and enforced by Ludwig the Pious, his successor Charles the Bald extended its validity further. Despite the Gregorian reform, the Aachen rules remained in most secular canons and Kanonissenstiften up through the Middle Ages out in force.

The Aachen rule (s ), so that took over parts of the decisions of the Synod of Mainz 813 as the canonical ( common ) way of life as from now mandatory for all cathedrals law.