Praise be to Allaah.
It means hating the evil and not sitting with those who do
it, because sitting with them without denouncing it is like what the
Children of Israel did, whom Allaah cursed in the verses (interpretation of
“Those among the Children of Israel who disbelieved were
cursed by the tongue of Dawood (David) and ‘Eesa (Jesus), son of Maryam
(Mary). That was because they disobeyed (Allaah and the Messengers) and were
ever transgressing beyond bounds.
79. They used not to forbid one another from Al-Munkar
(wrong, evildoing, sins, polytheism, disbelief) which they committed. Vile
indeed was what they used to do”
Shaykh ‘Abd-Allaah ibn Baaz.