What are the conditions that friends must adhere to in order to benefit from a young preacher who follows the Ash'ari school of thought, permits music while claiming that the four imams agreed on its prohibition, and is lenient in other matters, especially since they are common people and do not possess sufficient knowledge to distinguish between right and wrong?

We advise verifying what has been said about the person, for the default status of a Muslim is uprightness, and discrediting him is not accepted except with clear proof. It is obligatory to acquire knowledge from trustworthy scholars who adhere to the path of the Salaf, and an ordinary person should not receive knowledge from anyone else, whereas it is permissible for those who can distinguish between right and wrong.