Madrasa and Mausoleum of As-Saleh Nagm Ad-din Ayyub. The Madrasa of al-Salih Najm al-Din Ayyub was erected on the site where the Fatimid Eastern Palace once stood. It was built in 1241-44 to teach the four sunni schools of fiqh (jurisprudence), an The mausoleum, the first in Egypt to be attached to a madrasa, was built by Salih al-Din's wife Shajarat al-Durr in 1250. 1