Sayyiduna Abu al-Tufayl al-Kinani (may Allah be pleased with him) says that the Prophet (peace and blessings be upon him) said: "Is there anyone who will tell me about Mudar?" A man among those present said: "I will tell you about them, O Messenger of Allah! As for their face, in which are their hearing and sight, that is this tribe of Quraysh. As for their tongue, with which they speak in their gatherings, that is this tribe of Banu Asad bin Khuzaymah. As for their kahil (upper back), that is this tribe of Banu Tamim bin Murr. As for their horsemen, that is this tribe of Qays Aylan." The narrator says: I saw the Prophet (peace and blessings be upon him) as though he (peace and blessings be upon him) was affirming what he said.
Al-Bazzar recorded it, and its chain contains narrators whom I do not know.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 16553