DNA: `Pakistani ideology` spread in India!

Recently, the Andhra Pradesh Waqf Board issued such a fatwa, which caused a strong reaction among Ahmadiyya Muslims in India, as well as the Central Government also dealt strictly with the Waqf Board. A fatwa was issued that Ahmadiyya Muslims are not Muslims at all, they are non-Muslims. Ahmadiyya Muslims are also considered infidels in Pakistan. Who are these Ahmadiyya Muslims?