Questions on the Explanation of the Book of Nullifiers of Islam

Question:
The Muslim community is passing through trials and tribulations, the greatest of which is the discord that tears apart the authority of the Muslims. This discord stems from the youth's ignorance of how to deal with those who disagree with them and how to conduct the criticism that followed the path of our righteous predecessors. Do you have a word to direct us, may Allah preserve you, on how to deal with errors and refute them, and how do we refute them?

Answer:
The problem is that people have entered into this matter who do not know how to handle it. It is obligatory for the youth, may Allah guide them, to learn first. They must learn and seek knowledge. Once they have learned, they will possess a body of knowledge. At that point, they will engage in calling people to Allah and removing the discord among people, among the Muslims.
with insight, meaning with knowledge , and wisdom is knowledge. So young people should learn; they should not be preoccupied with hearsay, saying so-and-so did this, so-and-so made a mistake in this, and so-and-so did that. They should leave these matters and devote themselves to learning beneficial knowledge. Then, if Allah wills, the correct path will become clear to them.