Allah states:
[مَّا كَانَ
مُحَمَّدٌ أَبَآ أَحَدٍ مّن رِّجَالِكُمْ]
(Muhammad is not the father of any of your men,) After this it was not
permitted to say Zayd bin Muhammad, i.e., he was not his father even though he
had adopted him. No male child of the Prophet lived until puberty. Khadijah, may
Allah be pleased with her, bore him Al-Qasim, At-Tayyib and At-Tahir, but they
died in childhood. Mariyah Al-Qibtiyyah bore him Ibrahim, but he also died in
infancy. He also had four daughters from Khadijah: Zaynab, Ruqayyah, Umm Kulthum
and Fatimah, may Allah be pleased with them all. Three of them died during his
lifetime, Fatimah lived long enough to be bereaved of him, then she died six
months later.