1. Perished Arabs
1.1. Ancient Arabs, of whose history little is known. Whom were 'Ad, Thamud, Tasm, Jadis, Emlaq and others.
2. Pure Arabs (Qahtanian Arabs)
2.1. Originated from the progeny of Ya'rub bin Yashjub bin Qahtan
2.1.1. Yemen
2.1.2. Comprised many tribes, 2 of which very famous
2.1.2.1. Himyar
2.1.2.1.1. Ancestors were Zaid Al-Jamhur, Quda'ah and Sakasic
2.1.2.1.2. The emigrating tribe of Himyar: Quda'ah, also left Yemen and dwelt in Samawah desert.
2.1.2.2. Kahlan
2.1.2.2.1. Ancestors were Hamdan, Anmar, Ta'i, Mudhhij, Kindah, Lakhm, Judham, Azd, Aws, Khazraj and descendants of Jafnah (Kings of ancient Syria)
2.1.2.2.2. Prior to Great Flood --> Emigrated from Yemen.
3. Arabized Arabs ('Adnanian Arabs)
3.1. From Ibrahim AS. In a town called Ar (near Kufah, on the West Bank of the Euphrates in Iraq).
3.1.1. Ar --> Harran --> Palestine (headquarters).
3.1.2. Story in Egypt. (Pharaoh and his wife Sarah)
3.1.3. Hajar as a wife. Son: Ismail AS.
3.1.4. Story of Zamzam spring.
3.1.5. Jurhum the Second.
3.1.6. Story to sacrifice his son, Ismail AS.
3.1.7. Ismail AS and his wife.
3.1.8. 12 sons of Ismail AS with the daughter of Mudad.
3.1.8.1. Nabet
3.1.8.1.1. Civilisation at the north of Hijaz. Made Petra their capital. Roman managed to vanquish their kingdom later.
3.1.8.2. Qidar
3.1.8.2.1. Multiplied in number and lived in Makkah. From them, issued the 'Adnan and son Ma'ad. 'Adnan is the 21st grandfather in the series of Prophetic ancestry. *some scholars belief, exactly 40 fathers between 'Adnan and Ibrahim.
3.1.8.3. Edbael
3.1.8.4. Mebsham
3.1.8.5. Mishma'
3.1.8.6. Duma
3.1.8.7. Micha
3.1.8.8. Hudud
3.1.8.9. Yetma
3.1.8.10. Yetour
3.1.8.11. Nafis
3.1.8.12. Qidman
3.1.9. Formed 12 tribes all over and outside the Peninsula. Most offsprings become untraceable except for the descendants of Nabet and Qidar.