Located at the back of the Mexuar, this oratory (oratorio) was restored in 1917, as it was in a terrible state of repair due to the explosion of a magazine in the valley of the river Darro in 1590. The front wall has four little balconies, with twin arches and small windows. The mihrab, very decorated, has a horseshoe arch with voussoirs and several inscriptions that refer to the precepts of the Koran and praise Mohammed V.