This small mosque is near the Kabuli gate. It has a prayer chamber and a small courtyard. It is the most decorated of the original buildings of the fort. To be ever ready in case of attack , stairs lead directly from the courtyard of this mosque to the top of Kabuli Gate.

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The prayer chamber is 19.2 meter long and 7.3 meter deep. It is divided into 3 equal chambers. There are domes from the inside but from the outside no domes can be seen. There is a small room at the end of these three chambers. this room was for the Pesh Imam(Prayer Leader). This room has a small domed roof from the inside but no outer dome. There is no place for ablution(cleaning up before prayers) in the mosque. This mosque is built into the fortification wall i.e. soldiers walked over the mosques roof. The outer wall of the mosque is the fortification wall itself.

On the outer wall of the mosque are beautiful round designs in which Islamic verses are written in Naqsh script. These verses are surrounded by a Lilly going around the Naqsh script. The Lilly design was later used by Mughals in Tomb of Jahangir, Tomb of Nur Jehan and the Shah Burj Gate in Lahore Fort. The design seems to have been copied from the coins used in that time.