On the other hand the pope ceded to the emperor the right of investiture by the sceptre.
When Henry the Lion, duke of Saxony and Bavaria, was placed under the imperial ban in 1180, Otto's services were rewarded by the investiture of the dukedom of Bavaria at Altenburg.
In this concordat a distinction was made between spiritual investiture, by the ring and pastoral staff, and lay or feudal investiture, by the sceptre.
The emperor renounced investiture by ring and staff, and permitted canonical elections; the pope on his part recognized the king's right to perform lay investiture and to assist at elections.
In 1075 he caused the investiture of ecclesiastica dignitaries by secular potentates of any degree to be condemned These two reforms, striking at the most cherished privileges ant most deeply-rooted self-indulgences of the aristocratic caste ii Europe, inflamed the bitterest hostility.