Is it permissible to mention the misdeeds of deceased enemies of Islam, and is it lawful to feel joy at their death?

The hadith: "Mention the good qualities of your dead and refrain from mentioning their bad ones" is weak. It is authentically narrated from Aisha that the Prophet said: "Do not revile the dead, for they have gone on to what they have presented."

Rejoicing at the destruction of the enemies of Islam and those who commit grave innovations and openly flaunt immorality is permissible.

This is indicated by:

1. Verse 9 of Surah Al-Ahzab: "Remember the favor of Allah upon you when armies came against you; then We sent upon them a wind and armies you did not see." This verse shows that the destruction of the enemies of Allah is a blessing that warrants gratitude.

2. The hadith in Bukhari and Muslim about two funeral processions passing by, one of which people praised and the other they spoke ill of. The Prophet said: "It has become obligatory" for both, explaining that the community are Allah's witnesses on Earth. The prohibition of reviling the dead does not include the hypocrite, the disbeliever, or one who openly commits immorality or innovation, in order to caution against their path.

3. The hadith in Bukhari and Muslim about a funeral procession that passed by the Prophet, who then said: "One who is relieved and one from whom others are relieved." The one from whom others are relieved is the wicked servant from whom people, lands, trees, and animals are relieved.

4. Ali ibn Abi Talib's prostration of gratitude to Allah upon the killing of "Al-Makhdaj" the Kharijite.

5. The joy of the Sunnis at the illness of "Ibn Abi Du'ad" the misguided innovator.

6. Imam Ahmad's response to someone who asked him if he would be sinful for rejoicing at what befell the companions of Ibn Abi Du'ad: "And who would not rejoice at this?"

7. The intense joy of the Sunnis at the death of Hasan ibn Saffi, the bigoted Rafidhi.

8. Ibn al-Naqib's congratulation upon the death of the Rafidhi scholar Ibn al-Mu'allim, and his statement: "I do not care when I die after having witnessed the death of Ibn al-Mu'allim."

All of this indicates the permissibility of rejoicing at the destruction of the enemies of Islam, innovation, and corruption.