http://wikiless.i2p/wiki/Genealogy_of_Khadijah's_daughters?lang=en
None of Muhammad's sons reached adulthood, but he had an adult foster son, Zayd ibn Harithah . Daughters of Muhammad all reached adulthood but only Fatima outlived her father. Citing, among others, the reported advanced age of Khadija, some Twelver Shia sources contend that Fatima was the only biological daughter of Muhammad, as she is known to have enjoyed a closer relationship with Muhammad, compared to Ruqayya, Umm Kulthum, and Zaynab.