We often speak of four legal schools and the jurisprudential divergences which oppose them. in terms of the foundations of religion and belief.

By analyzing their works, we clearly see that they professed the same doctrine, they followed the same path, their word was one and no difference opposed them in the field of belief. All their words, all their writings converge towards the same conception of the creed, as if it came from only one and the same person. Is there any clearer proof of truth than this?