Fatimah had three sisters named Zaynab bint Muhammad, Umm Kulthum bint Muhammad, and Ruqayyah bint Muhammad. She also had three brothers named Qasim ibn Muhammad, Abd-Allah ibn Muhammad, and Ibrahim ibn Muhammad, all of whom died in childhood. While Sunnis believe Zainab, Ruqayyah, and Umm Kulthum to be the other daughters of Muhammad, Shias believe that they were actually the daughters of Hala, the sister of Khadijah, who were adopted by Muhammad and Khadijah at her death. A reason given by the Shia scholars for this belief is the hadith on the event of Mubahalah (referenced to in the Quran (3:61)), in which there is no reference to the presence of any other female apart from Fatimah.