Who may be ruled as unbeliever and on what basis
We do not call anyone who offers the Islamic prayer an unbeliever as a result of committing any sin other than disbelief in God. To revile God is an act of disbelief and is indeed worse than associating partners with him.
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Who may be ruled as unbeliever and on what basis: The claim that a particular person will be in heaven or hell.
We do not testify that any particular person will be in heaven or hell except those whom God and His messenger have stated their destiny. We bear witness that whoever dies a believer belongs to heaven and whoever dies unbeliever will be in the Fire.8 0