فَاللَّهُ هُوَ الْوَلِيُّ
For Allah is the true Protector.
One analysis attempts to extract an implied conditional from the preceding rhetorical question. A key objection is that Allah’s guardianship does not depend on whether people take other protectors; it is an unconditional fact.
Thus the fāʾ need not automatically be forced into an ellipted conditional answer. The rhetorical connection between rejecting false guardians and affirming divine guardianship is clearer than any one mandatory reconstruction of a hidden condition.