What are the controls that govern the right to religions, and how can one judge which of them is correct and which is false, and what is the correct madhhab among the multiple madhahib of Islam?

Allah established signs for the soundness of His religion, Islam. The most important of these is the challenge of the Quran, which humanity has been unable to replicate. To know the true doctrine, one must adhere to what the Prophet (peace and blessings be upon him) and his companions were upon, for they conveyed the revelation purely. Every group that deviates from their methodology is in danger, and salvation is achieved by adhering to the revelation we inherited from the Prophet (peace and blessings be upon him). The Prophet said: "My Ummah will split into seventy-three sects, all of them in the Fire except one." And that is "the Jama'ah." In another narration: "What I and my companions are upon today."