Allah Ta’ala has mentioned in the Qur’aan Kareem:

لَقَدۡ جَآءَکُمۡ رَسُوۡلٌ مِّنۡ اَنۡفَسِکُمۡ

“Verily a messenger has come to you from the best amongst yourselves….” 

Hazrat Anas (radhiyallahu ‘anhu) reports that Rasulullah (sallallahu ‘alaihi wasallam) recited the above verse with a Fat-hah on the فاء of the word أنفسكم. In other words, verily a prophet of Allah has come to you from amongst the most superior, noble and virtuous of you (your tribes). After reciting this verse, Rasulullah (sallallahu ‘alaihi wasallam) said, “I am the most noble and superior of you in family lineage. From the time of Aadam (‘alaihis salaam) right up to me, there was no adultery. All of our ancestors were born in wedlock.”