During the reign of Shaybanid ruler Abdullaxon II, the Chashmai Ayyub complex underwent extensive renovations, and construction work was completed.
The construction suffered some losses, but the preserved parts represent a combination of a harmonious entrance portal, and adjoining it are the remains of the western curtain wall.
The II-shaped frame, the inside of which forms the obverse surface, tympanum, and ktoba, is finished with an inscription above the lancet arch.
The most effective place in the general composition of the decoration is ktoba, filled with Arabic inscriptions on a background of botanical ornamentation.
The portal frame on the external contour is marked by the II-shaped zone, strengthened by girih from intertwining octahedrons, made of terracotta bricks.
[7] The sacred pilgrimage site has a rectangular layout (19x26 meters) and consists of four rooms arranged from west to east, each enclosed with distinctive domes.
The oldest room is the square one (4.5 x 4.5 meters) known as the well, which is traditionally attributed to have been built by Arslonxon during the time of the Kalyan Minaret and Namozgoh Mosque.
The inscription mentions the construction of a grand chamber with a tall dome and minarets during Amir Temur's reign in 1379, according to his command.