 The original mihrab , uncovered in 1933 , has a semi @-@ dome above it with a marble column on either side . Intricate stucco decorations were a prominent feature of the mosque , with the mihrab and the walls ornately decorated . The mihrab had two sets of verses from the Quran inscribed in the conch , which is still intact . The first set of verses are the three that open al @-@ Mu ’ minoon : 
