 The central nave is groin @-@ vaulted , each bay being separated from one another by pointed transverse arches with rectangular profiles . The nave arcades are carried on cruciform piers with an engaged column on each face , sitting on a raised plinth . The two aisles of the mosque are also groin @-@ vaulted . Ibn Battuta noted that the Great Mosque had a white marble minbar ( " pulpit " ) ; it still exists today . There is a small mihrab in the mosque with an inscription dating from 1663 , containing the name of Musa Pasha , a governor of Gaza during Ottoman rule . 
