Faṭima bent Musa ben Jaafar, well known as Fatima al-Ma'suma (a) is the daughter of Imam al-Kazim (a) and sister of Imam al-Rida (a). She traveled to Iran to visit her brother, Imam al-Rida (a), in Tus. However, she passed away in the middle of the way due to an illness and was buried in Qom.