Hasan on Backbiting: Permission to mention evil of three people

‘Aqil reported: Al-Hasan, may Allah be pleased with him, said, “It is not backbiting to speak against three people: a follower of whims, an obstinate sinner who publicizes his sins, and a tyrannical ruler.”

Source: al-Ṣamt li Ibn Abī Dunyā 234

Al-Ghazali said, “The commonality between these three is that they are open about their sin and maybe even take pride in it, so how could they dislike mention of that while they intended to show it?”

Source: Iḥyā’ ‘Ulūm al-Dīn 3/153

عَنْ عَقِيلٍ عَنِ الْحَسَنِ رَضِيَ اللَّهُ عَنْهُ قَالَ ثَلَاثَةٌ لَيْسَ لَهُمْ غِيبَةٌ صَاحِبُ هَوًى وَالْفَاسِقُ الْمُعْلِنُ بِالْفِسْقِ وَالْإِمَامُ الْجَائِرُ

234 الصمت وآداب اللسان

قال الغزالي فهؤلاء الثلاثة يجمعهم أنهم يتظاهرون به وربما يتفاخرون به فكيف يكرهون ذلك وهم يقصدون إظهاره

3/153 إحياء علوم الدين