' Investigate all doctrines '...

"He who counsels his own soul should investigate, during his life in this world, all doctrines concerning God.

He should learn from whence each possessor of a doctrine affirms the validity of his doctrine.

Once its validity has been affirmed for him in the specific mode in which it is correct for him who holds it, then he should support it in the case of him who believes in it."



Muhyi-al-Din ibn al-'Arabi
Meccan Openings, II. 85.11