Having Manners When Forbidding The Evil
Hasan Al-Bana, may Allaah forgive us and him, said:
“We used to follow this way of commanding the good and forbidding the evil. We had a shaykh who used to teach us and guide us, so one day, I saw him praying between the pillars of the Mosque. So I wanted to advise him that praying between the pillars of the Mosque is disliked (makrooh). So I wrote him a letter and addressed it on behalf of “A Doer of Good”, saying, ‘O Shaykh, I saw you praying between the pillars of the Mosque, and this is disliked, as the Prophet (saw) said.’ I then signed it ‘A Doer of Good’, and sent to him by mail.
He got the letter and read it, then he said, ‘O youth, I have received a letter from a man who advised me not to pray between the pillars of the Mosque, and I did not previously know that it is disliked, so don’t do it.’
I was amongst the youth that he was addressing. So we were able to fulfill a good action without causing any insult or offense to our teacher.”
[Quoted in “Fee Dhilaal Soorah At-Tawbah” by Shaykh ‘Abdullaah ‘Azzaam, p. 75]