Layout Plan
[Picture source: © 1990 Julia Gonnella] [Picture source: © 1990 Julia Gonnella] 
Figure 2: Entrance in the eastern wall [Picture source: © Miriam Kühn] The mosque corresponds to the architectural type of a riwaq mosque, which means that a courtyard (sahn) is surrounded by a prayer hall on one side and colonnaded porticoes (riwaq) on the remaining three. Its plan is almost square. Herzfeld and Meinecke give a lateral inner length of 30m[1], which makes this mosque rather modest in scale[2]. The main entrance of the mosque is located on its northwest side[3]. It is connected by a long corridor to the central courtyard. Further north of the main entrance, an octagonal three-storey minaret rises[4]. Another smaller entrance is situated on the east side of the structure, almost opposite the main entrance (fig. 02)[5].
Figure 3: Qibla wall with mihrab [Picture source: © Miriam Kühn] The prayer hall and the porticoes are covered by plastered cross vaults. The prayer hall is constructed as a double nave[6]. The square area in front of the mihrab is emphasized by a ribbed cupola placed above a transition zone consisting of a three-stepped muqarnas-vaulting[7]. Three more, but smaller muqarnas domes span the corridor leading from the main portal to the courtyard[8].
The interior of the prayer hall is characterized by light coloured ashlar. The central bay of the qibla wall is accentuated by polished yellow stone (fig. 03).
Figure 4: Detail of the columns inserted into the corners of the mihrab [Picture source: © Miriam Kühn] 
Figure 5: Detail of the columns inserted into the corners of the mihrab [Picture source: © Miriam Kühn] A cornice adorns the upper part of the surface. A frieze of alternating dark and yellow stones follows below. The mihrab is framed by a band of dark stone. Two columns with Corinthian capitals, which might be reused, accentuate its corners (figs. 04-05).
Its frontal arch is decorated by dark and light-coloured stone. The lower part of the mihrab niche is structured by alternating vertical black and white stripes of intarsia/tiles. The dome’s interior surface is covered with small square yellowish stones/tiles. In Creswell’s historic photographs, the qibla wall and the mihrab were plastered[9]. The lower part of the mihrab niche was structured by very narrow arcades recessed into the wall.
A minbar made of similar polished yellow stone is located west of the mihrab (fig. 06). The columns of its canopy and a triangular frame surrounding a triangle of dark stone embellishing its flanks are made of marble. The portal is constructed of two pillars bearing a lintel topped by a decorative crest. Six lines citing the Quran 14:41 comprise the upper part of the inscription, while the lower part reproduces the Quran 9:18 (fig. 07). The portal is flanked by side elements with oscillating contours. The doors are made of wood and eventually open upon a staircase leading to the preacher’s seat. A passage is left beneath it. The preacher’s seat is flanked by a handrail pierced with geometric ornament. The preacher’s seat is topped by a canopy consisting of four marble columns supporting polylobed (multifoil) arches. They support a roof placed above a muqarnas moulding, topped by a ribbed dome painted green (fig. 08)[10].
Herzfeld’s historic photograph documents a different portal of the minbar: Pillars support a lintel with two lines of inscription (Quran 9:18) with fleur-de-lis crenellations above and an oscillating frame below[11]. The upper part of the current inscription on the minbar mentions the year 1377/1957-1958, while the lower part notes the year 1375/1955-1956 indicating restoration work undertaken on this minbar.
Figure 9: Dikkat mubaligh [Picture source: © Miriam Kühn] A platform for the reciter (dikkat mubaligh) is inserted above the entrance opposite the mihrab (fig. 09). It is made of the same polished yellow stone as the minbar and mihrab: Eight octagonal pillars with bases and simple capitals support the platform. Its stone railing is decorated at the margins and the centre with complete of partial trefoil designs.
The façade of the prayer hall facing the courtyard is structured by three arches[12]. They are walled up and pierced by a door below three windows. The central arch is accentuated by black and yellowish ablaq. The upper window in the central arch is highlighted by spolia (fig. 10). It is flanked on the left by a base and an octagonal shaft of marble and on the right by a porphyry fragment inserted into the jamb stones. Both are placed on a window sill with a two-line inscription documenting a restoration[13].
The three other wings are formed by porticoes facing the courtyard with two large arcades[14]. An additional narrower arcade in the north-west connects the courtyard with the entrance via a long corridor[15]. The courtyard is recessed, or rather the floors of the porticoes are raised. Three interlaced geometric ornaments of black and yellow stone are paved in front of the central pillar of each riwaq. An ablution area is reported by Herzfeld next to the entrance in the east wall[16], while Ibn Shihna mentions an ablution basin (midaʾa) next to the principal entrance[17]. Today there is an ablution area in the northern riwaq[18].
The exterior of the mosque is characterized by plain ashlar except for the portals and the minaret.
The main portal is imbedded into the façade[19]. In Creswell’s photographs, taken in the first half of the 20th century, two benches flank the entrance[20]. In Meinecke’s photographs, dating to 1978, these benches are missing[21]. Six lines of inscription are inserted above the door lintel on a panel with zigzag flanks. A three-zone muqarnas vaulting topped by a calotte with splines follows above. The surrounding moulding of the portal is only partly preserved in the upper part: A protuberant moulding surrounded by recesses was interlacing at the top of the front side.
The eastern portal is also imbedded into the façade (fig. 02). Today it is lower than the street level. It is decorated by ablaq up to the height of the lintel. A panel with incised geometrical ornament is placed above the entrance in the inside (fig. 11).
The octagonal minaret is structured by horizontal muqarnas friezes into three storeys[22]. Two two-zone muqarnas are followed by a more complex three-zone muqarnas moulding. A window or recess is inserted into each of the eight faces in the top storey. They are accentuated by a moulded frame with alternating cusps and chevrons.
Figure 10: Central Arcade of the Qibla-riwaq with spolia and inscription on the lintel [Picture source: © Miriam Kühn] 
Figure 11: Panel with incised geometrical ornament on the inside the eastern portal [Picture source: © Miriam Kühn] 