Canon 23
If a bishop, out of human kindness, grants small vineyards or pieces of land to clerics or monks to cultivate, or to hold for a time, even if it is proved that a long period of years has passed, the Church should suffer no damage, nor should the prescription of the secular law be brought up, which would prevent the Church from it [i.e. recovering the property].
(trans. Hillgarth 1986: 102, changed by J. Szafranowski)