Are Qadianis (Ahmadis) true Muslims ? Dr. Zakir Naik (Urdu)

How does Qadianism (Ahmadiyyat) differ from Islam :

According to the tenet of their faith, the Qadianis (Ahmadis) are required to study, accept, and follow the works, "revelations" (wahi), and writings of Mirza Ghulam Qadiani. In his books, Mirza Ghulam Qadiani makes the claim that he is in direct communication with God and ordains it upon his followers to believe in "Islam" according to his revelations. We have summarized here some of the differences between Qadianis (Ahmadis) and Muslims. It should be obvious that most of the beliefs instructed by Mirza Ghulam Qadiani contradict verses of the Holy Quran -- not to mention hundreds of authentic Hadith and Islamic doctrine.
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Ref : http://irshad.org/qadianism/differ.php