Advice to a father whose son is a partisan

Question:
Abu Salih from 'Arar says: The son who does not listen to his father's advice and goes against his obedience, and the father may not be pleased with some of his actions, and he asks a lot about some matters, such as partisanship for groups and the like, but I advise him not to pay attention to that, but he does not listen to me. What is your advice, O Shaykh?

Answer:
First, ask Allah for the beginning of the verse before anything else, and for success. Treat him with gentleness and softness, for gentleness does not enter anything except that it adorns it, and it does not leave anything except that it disgraces it. Be gentle with him and teach him, and seek the proper paternal religious guidance. Warn him against gatherings and partisanship, and say: "My son, these are invalid innovations with no evidence from the Book or the Sunnah. The believers are one community."
"The believers are but brothers" . These parties and ideological orientations have no standing; they divide the community, legislate for the community, and ignite enmity between some of them. Warn them against these ideas and the like, and seek help from Allah, or from a student of knowledge, then from a student of knowledge, then from a student of knowledge who will help you in guiding him and warning him. For if we take this path and advise our sons and hold them back with kind words, perhaps we will turn them away from these bad ideas and the hateful partisanship that has divided the affairs of the community and has not returned to them with any good.