He may have grown up on a specific path or a specific school of jurisprudence, knowing little of anything else, and thus assumes that the truth is confined to it, or something similar to that.
Machine translationRead the Arabic original
The Shaykh :"Likewise, he may have grown up on a specific path or a specific school of jurisprudence, knowing little of anything else, and thus assumes that the truth is in it, and he never pays attention to anything else. This is very common. You will find, for example, in countries that follow the school of Imam Ahmad ibn Hanbal, if other schools of jurisprudence are mentioned to the common people, they will reject them and not consider them part of Islam, and it will be difficult for them to move away from their original school of jurisprudence."