Analysis of information sources in references of the Wikipedia article "Dargah" in English language version.
Relying mainly on hadiths and the Qur'an, Ibn 'Abd al-Wahhab's most famous work, The Book of God's Unicity (Kitab al-tawhid), describes a variety of shirk practices, such as occultism, the cult of the righteous (salih), intercession, oaths calling on other than God himself, sacrifices or invocational prayers to other than God, and asking other than Him for help. Important things about graves are remarked on in a chapter entitled "About the Condemnation of One Who Worships Allah at the Grave of a Righteous Man, and What if He Worships [the Dead] Himself."72 Ibn 'Abd al-Wahhab starts by quoting a hadith: "Umm Salama told the messenger of Allah about a church she had seen in Abyssinia in which there were pictures. The Prophet said: 'Those people, when a righteous member of their community or a pious slave dies, they build a mosque over his grave and paint images thereon; they are for God wicked people.' They combine two kinds of fitna: the fitna of graves and the fitna of images." He then continues with another hadith: "When the messenger of Allah was close to death, he ... said: 'May Allah curse the Jews and Christians who make the graves of their prophets into places of worship; do not imitate them.'" From this hadith Ibn 'Abd al-Wahhab derives the prohibition of building places of worship over graves, because that would mean glorification of their inhabitants, which would amount to an act of worship to other than Allah.
Many modern Islamic reformers criticize visits to shrines as mere superstition and a deviation from true Islam.
Relying mainly on hadiths and the Qur'an, Ibn 'Abd al-Wahhab's most famous work, The Book of God's Unicity (Kitab al-tawhid), describes a variety of shirk practices, such as occultism, the cult of the righteous (salih), intercession, oaths calling on other than God himself, sacrifices or invocational prayers to other than God, and asking other than Him for help. Important things about graves are remarked on in a chapter entitled "About the Condemnation of One Who Worships Allah at the Grave of a Righteous Man, and What if He Worships [the Dead] Himself."72 Ibn 'Abd al-Wahhab starts by quoting a hadith: "Umm Salama told the messenger of Allah about a church she had seen in Abyssinia in which there were pictures. The Prophet said: 'Those people, when a righteous member of their community or a pious slave dies, they build a mosque over his grave and paint images thereon; they are for God wicked people.' They combine two kinds of fitna: the fitna of graves and the fitna of images." He then continues with another hadith: "When the messenger of Allah was close to death, he ... said: 'May Allah curse the Jews and Christians who make the graves of their prophets into places of worship; do not imitate them.'" From this hadith Ibn 'Abd al-Wahhab derives the prohibition of building places of worship over graves, because that would mean glorification of their inhabitants, which would amount to an act of worship to other than Allah.
Many modern Islamic reformers criticize visits to shrines as mere superstition and a deviation from true Islam.