Reference: Majmoo’ Kutub wa Rasaa.il wa Fataawa ash-Shaykh Rabee’ al-Madkhalee – v14, p294
قال الشيخ ربيع_المدخلي :
"إذا رأيت شخصا على حق وآخر على باطل يجب أن تنصر الحق وتحذر من الباطل وإلا فأنت ميت لاتعرف معروفاً ولاتنكر منكراً "
المجموع 294/14
— Abu Walad (@salafirajul) November 24, 2017
Shaykh Rabee’ al-Madkhalee said:
If you see a person upon truth, and another upon falsehood, then you must aid the truth and warn against the falsehood, otherwise [it is as if] you are dead; you do not know [that which is] good and do not detest [that which is] evil.