Requirements of Enjoining Good and Forbidding Evil
2 hadiths
A man was brought to him, and it was said: This is so-and-so, and his beard is dripping with wine. Thereupon he said: We have been prohibited from spying. However, if we see something evident, we will act upon it
Ibn Mas‘ūd (may Allah be pleased with him) reported: A man was brought to him and it was said: "This is so-and-so, and his beard is dripping with wine." Thereupon he said: "We have been prohibited from spying. However, if we see something evident, we will act upon it."
I implore you by Allah (to tell me) if you heard the Messenger of Allah (may Allah's peace and blessings be upon him) saying: Answer on my behalf. O Allah, aid him with the Holy Spirit. He said: By Allah, yes
Abu Hurayrah reported that ‘Umar happened to pass by Hassān (may Allah be pleased with him) as he was reciting verses of poetry in the mosque. He (‘Umar) looked at him (meaningfully). Upon which, Hassān said: "I used to recite poetry (in the presence) of one better than you (the Prophet). He then looked at Abu Hurayrah and said to him: "I implore you by Allah (to tell me) if you heard the Messenger of Allah (may Allah's peace and blessings be upon him) saying: '(Hassān) answer on my behalf. O Allah, aid him with the Holy Spirit (Jibrīl).’” He (Abu Hurayrah) said: “By Allah, yes (I did).”