Please cite an authentic narration regarding those who do not forbid evil.
There are a few verses of the Holy Quran which discuss this. There are also many Hadiths which encourage enjoining good and forbidding evil.
Imam Tirmidhi (rahimahullah) has recorded the following narration which explains the punishment for not forbidding evil.
Sayyiduna Hudhayfah ibn Yaman (radiyallahu ‘anhu) reports that Nabi (sallallahu ‘alayhi wa sallam) said:
“You should certainly enjoin good and forbid evil else Allah will swiftly send a punishment, then you will supplicate to him but your supplication will not be answered”
(Sunan Tirmidhi, Hadith: 2169. Declared sound by Imam Tirmidhi)
Also see here.
Answered by: Moulana Suhail Motala
Approved by: Moulana Muhammad Abasoomar
Checked by: Moulana Haroon Abasoomar