It is known that Zeynel Abidin, one of the prominent of the Rufai Sect, built a lodge, mosque and fountain in the environment where the tomb is today. Known as Imam Sultan in Kayseri, Zeynel Abidin died in Kayseri in 1414 and a modest mausoleum was built on the grave at the present place. II. In the time of Abdulhamit, in 1886, the existing tomb was built in the place where Zeynel Abidin's grave was located. The tomb is a square planned structure and is covered with a dome. There are two lines of couplets on all the windows of the building with three windows on each side. There is a sarcophagus of Zeynel Abidin in the middle of the tomb. In the building inscription on the entrance door of the building, it is engraved on an oval medallion.
https://www.kayseri.bel.tr/kesfet-listeleme/zeynel-abidin-turbesi