Some say that anyone who testifies – says the kalimah ‘lā ilāha illā -llāh, muḥammadur rasūlu -llāh (There is none worthy of obedience and worship except Allāh and Muhammad is the final Messenger of Allāh), makes them a Muslim and we have no right to question that.
Sincerity, however, is subject to proof.
First of all, Islam...
