The Prophet reaffirmed this teaching - with noticeable aggression - in the following Hadith: "O people, your Lord is one and your father Adam is one. There is no favour of an Arab over a foreigner, nor a foreigner over an Arab, and neither white skin over black skin, nor black skin over white skin, except by righteousness. Have I not delivered the message?"

It is mentioned in reliable traditions that Imam Hasan and Imam Husain (a.s.) said that Prophet’s nobility was visible through his eyes and that his chest reflected his bravery and awe. His face always remained radiant like the bright moon of the fourteenth night of the lunar month.