Narrated Abdullah ibn Masud: 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.
Hadith Referenceسنن ابي داود / أبواب النوم / 5117
Hadith Gradingالألبانی:صحيح موقوف مرفوع | زبیر علی زئی:إسناده صحيح
1؎: Just as it is not possible to pull out a camel by holding onto its hump, in the same way, it will be impossible for a prejudiced person to come out of Hell.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues: One who unjustly supports his own people cannot save himself from destruction. Therefore, a believer should refrain from such wrongful action. Rather, they should exhort others to the truth. Although this narration is mawquf (attributed to a Companion), it is supported by the following chain which is marfu‘ (attributed to the Prophet sallallahu alayhi wa sallam).
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 5117