Person

ʿAdnān

عدنان
Lifespan unknown Adnanite Arabs

Eponymous ancestor of the Adnanite Arabs and direct paternal ancestor of the Prophet Muhammad ﷺ in the 21st generation. Beyond ʿAdnān the chain to Ismāʿīl is contested in classical Islamic genealogy; the Prophet ﷺ said: "When the genealogists reach ʿAdnān they should stop" (according to one report). All Sunni schools agree the chain Muhammad → ʿAdnān is preserved with high reliability.

Significance

Eponymous ancestor of the Adnanite Arabs and direct paternal ancestor of the Prophet Muhammad ﷺ in the 21st generation. Beyond ʿAdnān the chain to Ismāʿīl is contested in classical Islamic genealogy; the Prophet ﷺ said: "When the genealogists reach ʿAdnān they should stop" (according to one report). All Sunni schools agree the chain Muhammad → ʿAdnān is preserved with high reliability.
Sources: Wikipedia and classical Islamic biographical literature compiled by automated researchers. Every page is being continuously refined — if something looks off, please check back in a few days.