Although the Mosque, which belongs to the period of Fatih Sultan Mehmet, is called the Babrali Masjid or the Imam Ali Masjid in relation to its bani, it is known as the Nalli Masjid among the people due to the horseshoe-shaped traces on the minaret pulpit once found. It is recorded in the Hadikatü’l-cevámi that it was built by Imam Ali, a relative of Akşemseddin. The pulpit was laid by Feyzullah Efendi, the brother of Hekimoğlu All Pasha. While the main structure consists of the last community portico with a square plan harim covered with a dome, it is understood that during the renovation during the reign of Sultan Abdülaziz, a part of the harim close to the north wall was cut with the wall and turned into the last community place.
In the building, the massive walls with sides of 8.5 m and thickness of approximately m. bear the dome, the connections of which are provided by Turkish triangles. Its mihrab, which is in a thin, long, unpretentious niche, is bordered by fluted columns on two sides, and there are muqarnas plaster ornaments with baklava slices in the arc of the mihrab. Again, on top of a double-row board with muqarnas, there is an ornate pediment consisting of rumi and palmettes The wooden pulpit and the preaching pulpit are decorated with floral ornamentation and the motifs on it are accentuated with gold gilding as relief. The pulpit has an Eastern influence with its tapered onion dome. The connection with the Hünkar assembly is provided by a staircase with wooden railings. Nalli Masjid is a very bright building that receives light from four large windows in the lower row, eight at the level of the assembly and four small windows on the pulley.
The line of the verse plate on the three doors is reached by a staircase with an openwork railing with geometrically patterned passages to the main door on the north façade The line of the verse plate on it belongs to Kazasker Mustafa İzzet Efendi and the writing of the door on the western façade belongs to Sami Efendi. The broken door from the window on the east side opens to the hünkar mahfi. The dominant pencil work ornaments of the masjid contain floral compositions. The only glorious minaret of the building, which is built of cut stone, is close to the northeast corner of the masjid and although it is flooded from the façade, its door is inside the structure. After the stunted body, which rises on a high lectern, ends with a bracelet, the eight Rows of stalactites begin six.
An Iranian-style safife, supported by thin columns, has an onion-shaped cone on top of the honeycomb. This appearance in its minaret is also evident in the palmette belt at the foot of the dome and the stalactite border on the roof eaves. These details were added to the structure during the tädilates of the late XVIII century and the beginning of the XIX century. This form was given to the minaret in 1866, which is similar to the minaret of many buildings built at that time. This part of the minaret was repaired in late 1961 and early 1962. The tomb of Imam Ali Efendi, the bani of the masjid, without inscriptions, is located at the back of the Javad Pasha Library in the Governor’s Building near the masjid.
SOURCE: TDV Encyclopedia of Islam