There are seven children for the Prophet of God (sw)

“The Prophet brought six offspring from Khadijah - two boys named Qasim and Tahir who was also called Abdullah and four daughters who are Umm Kulthum, Ruqayah, Zaynab and Fatimah. Ali ibn Abi Talib (MGB) married Fatimah (MGB). Abul As ibn Rabia, who was one of the Umayyads, married Zaynab. Uthman ibn Affan married Umm Kulthum but she died before the marriage was consummated. When Uthman went to the Battle of Badr, the Prophet (MGB) married off Ruqayah to him. The Prophet (MGB) also had a son named Ibrahim from Maria al-Qibyiyya who is also called Umma Ibrahim and Um’ma Valad .”

‘O Khadijah’s daughter! I swear by God that you believe that your mother was better than us. What was in her that made her nobler than us?’ Fatimah who was listening to her cried when she saw the Prophet (MGB). The Prophet (MGB) looked at her and asked, ‘O daughter of Muhammad! Why are you crying?’ She replied, ‘Ayesha mentioned my mother’s name with disrespect and I cried.’ The Prophet of God (MGB) became angry, turned to Ayesha and said, ‘O Homeyra! Be silent. The Blessed the Sublime God has honored kind women who give birth to children. Khadijah - may God may have mercy upon her - has brought two sons from me. The first one is called Tahir, Abdullah or Mutah’har. The second one is called Qasim. Khadijah has delivered four daughters for me who are Fatimah (MGB), Ruqayah, Umm Kulthum and Zaynab. However, you are one whom God has made barren and have not given birth to any child for me.”