We direct your attention to a little discussed, rarely quoted passage from the official Sharia Law Book, “Reliance of the Traveller”. Maybe the reason its not talked about much is the Islamic community does not want you to find out about it.
w4.0 THE FINALITY OF THE PROPHET’S MESSAGE (from al.S)
w4.1 (n:) This section has been translated to clarify some possible confusions among Muslims as to Islam’s place among world religions. The discussion centers on three points:
(1) Muhammad (Allah bless him and give him peace) is the last prophet and messenger. Anyone claiming to be a prophet or messenger of Allah after him or to found a new religion is a fraud, misled and misleading.
(2) Previously revealed religions were valid in their own eras, as is attested to by many verses of the Holy Koran, but were abrogated by the universal message of Islam, as is equally attested to by many verses of the Koran. Both points are worthy of attention from English-speaking Muslims, who are occasionally exposed to erroneous theories advanced by some teachers and Koran translators affirming these religions’ validity but denying or not mentioning their abrogation, or that it is unbelief (kufr) to hold that the remnant cults now bearing the names of formerly valid religions, such as “Christianity” or “Judaism,” are acceptable to Allah Most High after He has sent the final Messenger (Allah bless him give him peace) to the entire world (dis: o8.7(20)) This is a matter over which there is no disagreement among Islamic scholars, and if English-speaking Muslims at times discuss it as if there were some question about it, the only reason can be that no one has yet offered them a translation of a scholarly Koranic exegesis (tafsir) to explain the accord between the various Koranic verses, and their agreement with the sunna. The few passages translated below will hopefully be of use until this has been done.
(3) Islam is the final religion that Allah Most High will never lessen or abrogate until the Last Day. A hadith that seems to imply that “a tenth of Islam” will be enough for Muslims in the latter days is discussed at the end of the section.
That’s right, Christianity and Judaism are identified as “cults”, “formerly valid religions” and have been abrogated (replaced) by Islam.
This says a lot about how the Islamic community feels about Interfaith relations!