The Prophet sallallaahu `alayhi wa sallam (may Allaah exalt his mention), said: "O, people, indeed your Lord is One and your father is one. Know that there is no superiority of an Arab over a non-Arab, or a non-Arab over an Arab, or a red person over a black person, or a black person over a red person - except by piety."
Is this hadith authentic? I hear it mentioned a lot. I believe it is in musnad ahemd or one of the sirah narrations? But I didn't find mention of Black over Red Persons etc.