The Ruling on Publicizing the Faults of Preachers and Speaking About Their Character

Question:
What is the ruling on one who speaks about the preachers, knowing that these preachers are preachers of a party, and the scholars have spoken about them? Is it permissible to publicize their faults and speak about their character?

Answer:
By Allah, my brothers, the matter of preoccupied with people, and so-and-so is like this and so-and-so is like that, this is not the concern of students of knowledge, nor is it the concern of the common Muslim believers, so how about students of knowledge? It is obligatory that we advise one another, cooperate, seek knowledge, and leave these matters that have occupied people and caused enmity and grudges. If someone has an error, it is clarified to him and he is asked to return to the truth.
And if he does not return, he is left to his own device. As for us constantly being occupied with so-and-so and so-and-so, and that being our occupation, this is truly not the concern of those who call to Allah. These people need to call, how do they call themselves preachers when they are occupied with one another? These people need to call to Allah the Exalted and Majestic, so that they leave this matter and this delving that has occupied people and caused enmity and hatred. It is obligatory that the one who errs is advised, and if he accepts the advice, otherwise he is left.
He is left; it is his affair and his sin is upon himself. As for us constantly saying so-and-so and so-and-so, and leave so-and-so, and say Abu so-and-so, and deal with so-and-so, this is not permissible. Yes.