The followers of this schooll (SHIITE) have so many traditions from the prophet which are conveyed through Imam Ali or other Imams. These have all been collected and classified, and make the main source of SHIITE'S religious juris-prudence.The most important books among the collections are four, and are known as KOTOBE ARBA_EH (THE FOUR BOOKS). These are as follows:

1 _ KAFEE.

2 _ MAN LA YAHZARAOL FAGHIH,

3 _ TAHZIB.

4 _ ESTEBSAR.

Not that, all the traditions found in these four books, or elsewhere are indisputably correct or acceptable.

Each tradition as we said it, has a series of documents and narrators that are to be cheked out and confirmed. If all the documents and narrators prove to be right and trustworthy, then the tradition may be considered true and accepted. Such investigations about the traditions is the task of religious experts and scholars. Therefore the SHIITE'S collected works in the field of tradition differs with that of the Sonnies. The way Boxhari and other Sonni scholars such as Moslim took in their collected works differ from that of our authors. Their criteron of right and wrong is only the author's distinction. So to understand the belief of a Sonni, it is enough to get access to their important tradition books, called SAHIH. Contrary to that, SHIITE has collected all the traditions that they could; narrated by the Imams just to be investigated, judged, approved, and then be accepted for action. And that is to be done by learned and trusted authorities and religious specialists.