Muhammad
Muhammad's life is traditionally defined into two periods: pre-hijra (emigration) in Mecca (from 570 to 622), and post-hijra in Medina (from 622 until 632). Muhammad is said to have had thirteen wives in total (although two have ambiguous accounts, Rayhana bint Zayd and Maria al-Qibtiyya, as wife or concubine.) Eleven of the thirteen marriages occurred after the migration to Medina.
Fatimah
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 strong reason given by the Shi'a scholars for this belief is the event of ("Mubahala") mentioned in the Quran, in which there is no reference to the presence of any other female apart from Fatimah, however Sunnis accept that Muhammad had four daughters all from Khadijah.
There are several traditions related before and after Fatimah's birth in Shia sources which are expressed on this occasion: the glorification of God to Muhammad in the presence of Fatima in the ascension: O Muhammad! Allah gives you the good news of Fatimah from Khadījah bint Khuwaylid. "The Holy Prophet, before the coagulation of Fatima’s sperm, fasted for forty days and worshiped at nights." After forty days of worship, Gabriel came down and said: O great Prophet! Allah bless you and orders to be ready for His great present. The Prophet said to Gabriel: “what is the gift of the Lord of all the Worlds?” Gabriel said: I have no knowledge about it; at that time Michael descended while carrying a vessel covered with fine silk and heavy brocade and placed the vessel in front of the Prophet. The great present of Allah was the existence of Fatimah to all being.