| Religion: | Islam |
| Sitt al-Sham | |
| Death Date: | January 1220 |
| Death Place: | Damascus, Ayyubid dynasty |
| Other Names: | Umm Husam al-Din |
| Nationality: | Ayyubid |
| Spouse: | Umar ibn Lājīn Muhammad ibn Shirkuh |
| Occupation: | Islamic scholar, Humanitarian Services |
| Denomination: | Sunni |
| Jurisprudence: | Shafi'i |
| Father: | Najm ad-Din Ayyub |
| Mother: | Sitt al-Mulk Khatun |
Fatimah Khatun bint Najm ad-Dīn Abu al-Shukr Ayyub ibn Shādhi ibn Marwān (died 1220), popularly known as Sitt al-Sham, was a second sister of Saladin, probably older than Rabi'a Khatun. She is known for founding Al-Shamiyah al-Kubra Madrasa.[1]
Born in Damascus, she was the wife of Muhammad ibn Shirkuh of Homs. Some historians are confused regarding her name; they think it to be Zumurrud. His father was called al-Malik al-Afdal as he was a minister with his brother Asad ad-Din Shirkuh in the court of Nur ad-Din Zengi.[2]
She married Umar ibn Lājīn and gave birth to their first child, Husām al-Dīn ibn Lājīn. Her first husband Umar ibn Lajin died shortly thereafter. Then she married his paternal cousin, Muhammad ibn Shirkuh, who was the ruler of Homs.[1]