Descent from the Prophet can also come from the maternal side as from the paternal

Among the Ottomans it was sufficient for one's paternal line of
descent to go back to our Prophet (saas) to be regarded as a
sayyid. However, it is also possible to be a sayyid on one's
mother's side only. The rank of sayyid goes back to the daughter of
our Prophet (saas) and Hazrat Fatima (ra), the mother of Hazrat
Hassan (ra) and Hazrat Hussain (ra). Our Prophet (saas) also had
male children, but these died at an early age. The Prophet's (saas)
line was thus continued through his daughter. As it can be
understood, one can thus be a sayyid through the maternal line as can
be from the paternal . The great Islamic scholars Ibrahim Hakki
Erzurumi (1703-1780) and Abdul Qadir Gaylani (1078-1166) were both
sayyids on their mothers' sides.