Hadithcore
Sunan Abi Dawud, 5117
sahih· Al-Albani

Narrated Abdullah ibn Mas'ud:

If anyone helps his people in an unrighteous cause, he is like a camel which falls into a well and is pulled out by its tail.

حَدَّثَنَا النُّفَيْلِيُّ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنَا سِمَاكُ بْنُ حَرْبٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ، عَنْ أَبِيهِ، قَالَ مَنْ نَصَرَ قَوْمَهُ عَلَى غَيْرِ الْحَقِّ فَهُوَ كَالْبَعِيرِ الَّذِي رُدِّيَ فَهُوَ يُنْزَعُ بِذَنَبِهِ ‏.‏

References2 variants
In-Book Reference
Book 43, Hadith 345
English Reference
Book 42, Hadith 5098