This ability is in the framework of natural and material powers...

This ability is in the framework of natural and material powers, such as asking a person for a glass of water. Sometimes this ability is an unseen power that is beyond the material and natural framework. Such a person's belief in such a super natural power, in case of its dependence, is just as the belief in a natural and material power to humans, in the same manner can God also can also grant supernatural ability to some of his pious slaves.

Now in explaining the mentioned answer we say: belief in the supernatural power of God's friends can be imagined in two ways: Belief in the supernatural power of a person by accepting him as an independent and original source for that power such that a Godly work is independently attributed to him.

It is inevitable that belief in such a power independent of God's power causes polytheism, because in this case we have considered other than God as an independent and original power and have attributed a Godly work to him, while the source for all powers is only the lord of the worlds Belief in a supernatural power of some upright slaves of God, with the belief that this power has originated from the everlasting power of God, and God's friends, with God's permission, are only the means for the manifestations and appearance of that eternal power, and have no independence for themselves.

Moreover, these slaves are dependant on the Exalted God in their presence and also in exercising the supernatural authority. It is evident that such a belief is not the considering of God's friends as God, or attributing Godly works to them because in this case it would mean that the pious slaves are demonstrating their supernatural God given authority by God's permission and non-violated will.

The holy Quran states in this regard: And it is not in the power of an apostle to heave a sigh except by Allah's permission With this explanation, it becomes clearly evident that such a belief does not cause polytheism, however, has perfect concordance with the principle of unification. Super natural authority of God's friends from the Quranic view: Islam's heavenly book mentions with perfect explicitness that a group of God's upright slaves whom by God's permission had such a great power.

Some examples in this field are the following: Super natural power of his holiness Moses: the Exalted God commanded prophet Moses to strike his stick in a stony rock so that springs of sweet water gush out, how?