مُسْنَدُ أَحْمَدَ
Musnad Ahmad 4264
Musnad of Abdullah bin Mas'ood
It was narrated from 'Abdur-Rahman bin ‘Abdullah from his father who said: The Prophet (ﷺ) said: "The likeness of the one who helps his people in wrongdoing is like the camel that falls into a well and stretches out its tail.”
Musnad Ahmad 4292Its isnad is hasan]