Translation: [ Islam, on contrary to other beliefs, gives the dead people their rights, i.e. not to mention them except with good words, as a dead person is not able to defend himself. Besides, mentioning them with evil words hurts the dead and the living.
Translation: Thus, one should not curse or mention them with evil, except those cursed by the Noble Koran and Sunna, like Pharaoh and Abu-Lahab.
The Messenger of Allah said as:
Translation: Narrated by A'isha ' The Prophet said: " Don't abuse the dead, because they have reached the destination of what they forwarded (and they will be reckoned for their own deeds). " (Bukhari)
Translation: Narrated Al-Mogheerah ibn Sho'ba: ' The Messenger of Allah ﷺ said: “ Do not abuse the dead lest you would harm the living. " " "
Thus, Sunna refutes what some so-called holy books say that accuse the Prophets of Allah with committing heinous crimes.
And now, let us see what Imam Al-Nawawi compiled.]
Translation: 488. Narrated Anas ibn Malik: ‘ A funeral procession passed and the people praised the deceased. The Prophet said: " It has been affirmed for him. " Then another funeral procession passed and the people spoke badly of the deceased. The Prophet said: " It has been affirmed for him. " Omar ibn Al-Khattab asked: " Allah's Messenger! What has been affirmed? " He replied: " You have praised this one so Paradise has been affirmed to him; and you have criticized the other, so Hell has been affirmed for him. You people are Allah's witnesses on earth. " (Bukhari)
Translation: 489. Narrated Omar: The Prophet said: “ If four people testify to the piety of any Muslim, Allah will grant him Paradise. We asked: " What would the case be if three people testify to his piety? " The Prophet ﷺ said: “ Even if they were three people. " Then we asked: " If they were two? " He replied: " Even if they were two. " We did not ask him regarding one witness. ' (Bukhari)