“I asked: O Messenger of Allah,

Fasilah reported that her father said, “I asked: O Messenger of Allah, is it tribal bigotry for a man to love his people?” The Messenger of Allah صلى الله عليه وسلم said, “No, rather tribalism is to support your people when they are committing oppression.”

[Sunan Ibn Majah, Book 36, Number 3949]

Book of Fitnah (Tribulations), Chapter: Tribalism

فُسَيْلَةُ قَالَتْ سَمِعْتُ أَبِي يَقُولُ  سَأَلْتُ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقُلْتُ يَا رَسُولَ اللَّهِ أَمِنَ الْعَصَبِيَّةِ أَنْ يُحِبَّ الرَّجُلُ قَوْمَهُ قَالَ لَا وَلَكِنْ مِنْ الْعَصَبِيَّةِ أَنْ يُعِينَ الرَّجُلُ قَوْمَهُ عَلَى الظُّلْم

 سنن ابن ماجه كتاب الفتن باب العصبية