All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah and that Muhammad is His slave and Messenger.
There is no doubt that the beliefs of each of the Ahmadiyyah and the ‘Alawiyyah sects are based on foundations and principles of Kufr (disbelief); however, not all those who belong to these sects are disbelievers because declaring individuals as such is regulated by the Sharee'ah; there are some conditions that must be met while there can also not be any impediments for declaring the person a disbeliever.
We have already clarified this in fataawa 8106 and 87963, so please refer to them.
Allaah knows best.