Narrated Abu Hurairah:
that the Messenger of Allah ﷺ said: "Leadership is among the Quraish, and reasoning and judgment is among the Ansar, and the Adhan is among the Ethiopians, and the trust is among the Al-Azd." meaning Yemen.
حَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ، حَدَّثَنَا زَيْدُ بْنُ حُبَابٍ، حَدَّثَنَا مُعَاوِيَةُ بْنُ صَالِحٍ، حَدَّثَنَا أَبُو مَرْيَمَ الأَنْصَارِيُّ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " الْمُلْكُ فِي قُرَيْشٍ وَالْقَضَاءُ فِي الأَنْصَارِ وَالأَذَانُ فِي الْحَبَشَةِ وَالأَمَانَةُ فِي الأَزْدِ " . يَعْنِي الْيَمَنَ .
• Jami` at-Tirmidhi, Vol. 6, Book of Al-Manaqib (Virtues), Hadith 3936
• Jami` at-Tirmidhi, Book of Al-Manaqib (Virtues), Hadith 3936