The likeness of those who take Auliya' (protectors and helpers) other than Allah is as the likeness of a spider, who builds (for itself) a house, but verily, the frailest (weakest) of houses is the spider's house; if they but knew. S. 29:41
And as for those who take as Auliya' (guardians, supporters, helpers, protectors, etc.) others besides Him [i.e. they take false deities other than Allah (as) protectors, and they worship them] Allah is Hafiz (Protector) over them (i.e. takes care of their deeds and will recompense them), and you (O Muhammad SAW) are not a Wakil (guardian or a disposer of their affairs) over them (to protect their deeds, etc.). S. 42:6
Or have they taken (for worship) Auliya' (guardians, supporters, helpers, protectors, etc.) besides Him? But Allah, He ALONE is the Wali (Protector, etc.). And it is He Who gives life to the dead, and He is Able to do all things. S. 42:9
In front of them there is Hell, and that which they have earned will be of no profit to them, nor (will be of any profit to them) those whom they have taken as Auliya' (protectors, helpers, etc.) besides Allah. And theirs will be a great torment. S. 45:10
Allah has full knowledge of your enemies, and Allah is Sufficient as a Wali (Protector), and Allah is Sufficient as a Helper. S. 4:45
Verily, Allah! Unto Him belongs the dominion of the heavens and the earth, He gives life and He causes death. And besides Allah you have neither any Wali (protector or guardian) nor any helper. S. 9:116
Allah it is He Who has created the heavens and the earth, and all that is between them in six Days. Then He Istawa (rose over) the Throne (in a manner that suits His Majesty). You (mankind) have none, besides Him, as a Wali (protector or helper etc.) or an intercessor. Will you not then remember (or be admonished)? S. 32:4
And He it is Who sends down the rain after they have despaired, and spreads abroad His Mercy. And He is the Wali (Helper, Supporter, Protector, etc.), Worthy of all Praise. S. 42:28
The Quran, in many places, outright prohibits Muslims from seeking friends and protectors from any other entity besides Allah, even if they happen to be his servants like the prophets:
Do then those who disbelieve think that they can take My slaves [i.e., the angels, God's Messengers, 'Iesa (Jesus), son of Maryam (Mary), etc.] as Auliyâ' (lords, gods, protectors, etc.) besides Me? Verily, We have prepared Hell as an entertainment for the disbelievers (in the Oneness of God Islâmic Monotheism). S. 18:102
O children of Israel! call to mind My favor which I bestowed on you and that I made you excel the nations. And be on your guard against a day when ONE SOUL shall not avail ANOTHER in the least, neither shall intercession on its behalf be accepted, nor shall any compensation be taken from it, nor shall they be helped. S. 2:47-48
O children of Israel, call to mind My favor which I bestowed on you and that I made you excel the nations. And be on your guard against a day when NO SOUL shall avail ANOTHER in the least neither shall any compensation be accepted from it, nor shall intercession profit it, nor shall they be helped. S. 2:122-123
[from Faith Square]