*This statement is not considered as Pro-Arab nationalism, rather it refers to - in the terminology of the salaf - the non Muslim Arabs that the Salaf came in to contact with when Islaam began to spread to places like Asia, Persia etc. The proof of this is the other narration in Saheeh Muslim; "...and beware of imitating the appearance of the people of shirk". This explanation was also held by Imaam al-Qurtubee and Imaam an-Nawawee in their explanation of saheeh Muslim. An example of such is the manner of which these 'Ajam used to tie their turbans: without a tail (behind their backs or on their chest) or without a hat underneath it, and not bringing it underneath the chin, along many other examples. So it comes under the category of the prohibition of immitating the kuffar.