All that is ancient in Arabian tradition derived from the Jews
Beyond these periods, Mahometan tradition is entirely worthless. It is not original, but taken at second hand from the Jews. Mahomet having claimed to be of the seed of Ishmael, the Jewish Rabbins who were gained over to his cause endeavoured to confirm the claim from the genealogies of the Old Testament and of rabbinical tradition. In the attempt to reconcile these with the received notions of the Arabs, Joktan (whom they found in Scripture to be an early immigrant into Arabia) became identified with Cahtan, the great ancestor of the southern tribes; while Mahomet's paternal line (which he himself declared could not be followed beyond Adnan, that is, about a century before the Christian era) was nevertheless traced up by fabricated steps, eighteen centuries farther, to Ishmael2. Both the legends and the ethnological assumptions or Mahometans regarding events prior to the Christian era, being thus derived directly from the Jews, possess no value of their own, and as evidence must be entirely rejected. They consist either of simple plagiarism, or they refer to Arabian personages and events of a very modern date, confounded in a rude and even ludicrous manner with the patriarchal characters and stories of the Old Testament2.
http://answering-islam.org.uk/Books/Muir/Life1/chapter2.htm
'Abdu'l-Muttalib [Muhammad's grandfather] before his decease [when Muhammad was about 8 years old] appointed his son Abu Talib as guardian of his grandson. Abu Talib executed his office kindly and well. It is recorded that, 'on account of the great love he bore for Muhammad, he could not allow him to be absent from him for a single moment. During the night he made him sleep by his side, and in the day he fed him with delicious food.' When twelve years of age Muhammad went with his uncle on a mercantile journey to Syria."I think I've seen this guy quite often on the covers of bodice-rippers in WalMart.
"The Traditions give a very full account of Muhammad's personal appearance, his habits, his dress, his food, and the details of his daily life. From them we gather that in the primer of manhood he was handsome, rather above the middle height, with a broad and open chest. His head was large with a lofty brow, his jet black hair was slightly curly and fell down to his shoulders. His eyebrows were long and finely arched, and the heavy eyelashes covered large black piercing eyes. The nose was aquiline, the teeth white and regular, and a long black beard added dignity to his appearance. His skin was clear and soft. He walked with a firm but hasty step. As a rule he was taciturn and reserved, but in congenial company he could unbend and enter into the social pleasures of his friends. He was simple in his habits and in the matter of dress and food. He abhorred strong drinks but loved perfumes.