Quoted from the book (An Hour with Ghosts) ByMohammed-Ali Hassan Al-Hilli
The Devotion Should Exclusively Be to God and the Intercession Is Up to Him

People should not hold fast with saints, imams and sheikhs instead of God; neither should they sanctify their sepulchers and shrines; because they passed away and transferred to heaven, and became in the neighborhood of their Lord, and none of them remained on the earth save their empty sepulchers which contain nothing more than rotten and decayed bodies.

God – be glorified – said in the Quran 18: 102
أَفَحَسِبَ الَّذِينَ كَفَرُوا أَن يَتَّخِذُوا عِبَادِي مِن دُونِي أَوْلِيَاء إِنَّا أَعْتَدْنَا جَهَنَّمَ لِلْكَافِرِينَ نُزُلًا
The explanation:
(Do the unbelievers think that [they will be saved from the punishment] if they choose My servants as protecting friends beside Me?

Surely, We have prepared Hell as an abode for the unbelievers.)

Moreover, God – be glorified – said in the Quran 32: 4
اللَّهُ الَّذِي خَلَقَ السَّمَاوَاتِ وَالْأَرْضَ وَمَا بَيْنَهُمَا فِي سِتَّةِ أَيَّامٍ ثُمَّ اسْتَوَى عَلَى الْعَرْشِ مَا لَكُم مِّن دُونِهِ مِن وَلِيٍّ وَلَا شَفِيعٍ ..الخ
The explanation:
(It is God Who created the heavens and the earth and that which is between them in six [of the] days [of the Hereafter.] Then He mounted the throne. You have not, apart from Him, any patron nor any intercessor …etc.)

It means: Don't choose for yourselves, patrons, from among creatures, that you sanctify and worship besides God; eventhough they are prophets or angels of high rank; or you choose them as your intercessors with God; because the intercession, as a whole, belongs to God, and they do not mediate except for those whom God is pleased with.

In addition, God – be glorified – said in the Quran 6: 51
وَأَنذِرْ بِهِ الَّذِينَ يَخَافُونَ أَن يُحْشَرُواْ إِلَى رَبِّهِمْ لَيْسَ لَهُم مِّن دُونِهِ وَلِيٌّ وَلاَ شَفِيعٌ لَّعَلَّهُمْ يَتَّقُونَ
The explanation:
(And warn with the [Quran] those [believers] who fear [of their Lord's punishment for some of their deeds; because they know] that they shall be gathered together to their Lord; there is no protector for them besides Him, and no intercessor; haply they may ward off [God's punishment by warding off His disobedience.])

In "the aya of the Chair" 2: 255
مَن ذَا الَّذِي يَشْفَعُ عِنْدَهُ إِلاَّ بِإِذْنِهِ
The explanation:
(Who is he that intercedes with Him [on the Judgment Day] save by His leave [on behalf of monotheists only]?)

God – be glorified – said also in the Quran 39: 44
قُل لِّلَّهِ الشَّفَاعَةُ جَمِيعًا لَّهُ مُلْكُ السَّمَاوَاتِ وَالْأَرْضِ
The explanation:
(Say: "To God belongs exclusively the [right to permit] intercession: To Him belongs the kingdom of the heavens and the earth.)

Also God – be glorified – said in the Quran 2: 48
وَاتَّقُواْ يَوْماً لاَّ تَجْزِي نَفْسٌ عَن نَّفْسٍ شَيْئاً وَلاَ يُقْبَلُ مِنْهَا شَفَاعَةٌ وَلاَ يُؤْخَذُ مِنْهَا عَدْلٌ وَلاَ هُمْ يُنصَرُونَ
The explanation:
(And guard yourselves against [the torment of] a day when no soul will avail another anything, nor will intercession be accepted for it, nor will compensation be taken from it, nor will they be helped.)

And in the Quran 10: 18, God – be exalted – said:
وَيَعْبُدُونَ مِن دُونِ اللّهِ مَا لاَ يَضُرُّهُمْ وَلاَ يَنفَعُهُمْ وَيَقُولُونَ هَؤُلاء شُفَعَاؤُنَا عِندَ اللّهِ قُلْ أَتُنَبِّئُونَ اللّهَ بِمَا لاَ يَعْلَمُ فِي السَّمَاوَاتِ وَلاَ فِي الأَرْضِ سُبْحَانَهُ وَتَعَالَى عَمَّا يُشْرِكُونَ
The explanation:
(They worship, apart from God, what [can] neither hurt them nor profit them, and they say: "These [idols] are our intercessors with God!"

Say [O Mohammed, to them]: "Will you inform God of that which does not know [anything] in the [ethereal] heavens nor in the [material] earth?

Celebrated be His praise, and exalted be He above what [created beings] they associate [with Him!]")

Similarly, most of people have now become worshippers of the sepulchers of saints; and they say: "These are our intercessors with God; just like how the associaters [: the idolaters of Mecca, before the Islam] worshipped the angels and said: "These are our intercessors with God."

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