Dr. Muzammil Siddiqi, former president of the Islamic Society of North America, states the following: “Ahmadiyyah is a movement that started in India in the beginning of the 20th century. The founder of this movement, Ghulam Ahmed, from the village of Qadiyan in Punjab, claimed to be the Messenger of Allah.
Because of this claim, the scholars of Islam unanimously consider him as a non-believer. Some of his followers still believe that he was the Messenger although they say that he was not the full Messenger, but a subsidiary Messenger. They misinterpret the verse of Surat Al-Ahzab where Allah Almighty says, “ Muhammad is not the father of any man among you, but he is the messenger of Allah and the Seal of the Prophets; and Allah is Aware of all things.” (Al-Ahzab: 40)
They claim that the word Khatam An-nabiyyin doesn’t mean the last Prophet, but the best Prophet.
According to them, Prophet Muhammad, peace and blessings be upon him, was the best Prophet, but it is possible to have lesser or minor Prophets. However, this is obviously a wrong interpretation because there are many other verses and Prophetic Hadiths that indicate that Prophet Muhammad, peace and blessings be upon him, was sent as a Prophet of Allah for all people, and there are many authentic Hadiths, of which the Prophet, peace and blessings be upon him, said that there would be no Prophet after him. So Ahmadi’s have rejected a basic principle of Islamic faith and because of this, they are not considered Muslims. Among them, there is a group that says that Ghulam Ahmad was not a Prophet, but that he was the Messiah or the Madhi or things like that.
However, that is also obviously wrong because the Messiah and the Mahdi will come at the end of the world and the end of the world has not come yet, so that shows that this claim was a false claim.
The Ahmadi missionaries succeed because they are organized and they spread their message all over the world while many of us are lazy and we don’t present the authentic message of Islam with the same vigour and enthusiasm. Thus, instead of getting into arguments with Ahmadis or any other group, let us concentrate on presenting the authentic message of Islam and InshaAllah, the truth will prevail.”