For 10 points, identify this process that involves asserting one's belief in Allah and his prophet Muhammad.
According to the 256th verse of one text, this action cannot be done under duress. According to one tradition, this action gives between a ten and a seven hundredÂ­fold multiplier for gooddeeds. This action would naturally be followed by buying a sajjāda. This act is often seen as a "reversion," due to the doctrine of fiṭra. This action hinges on (*) saying the words "lā ilāha illāÂ­llāh." This nonÂ­physical processis immediately followed by ghusl. Not doing this action was once punishable by death, according to the Sword Verse. Expressing belief in tawḥeed by sincerely reciting the shahāda is all that is required in this action. For 10 points, identify this process that involves asserting one's belief in Allah and his prophet Muhammad.
According to the 256th verse of one text, this action cannot be done under duress.
converting to Islam [accept equivalents like becoming a Muslim; accept "taking shahāda" or similar answers until "shahāda" is mentioned]