Sunan Abi Dawud 5117
سنن أبي داود#5117SahihNarrated 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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih Muquf
Muhammad Muhyi Al-Din Abdul HamidSahih Muquf
Zubair Ali ZaiIsnaad Sahih
In-book reference: 43:345