Those are a people who, when a righteous slave or a righteous man from among them dies, they build a place of worship

’Umm Salamah, the Mother of the Believers, (may Allah be pleased with her) mentioned to the Prophet (may Allah's peace and blessings be upon him) that when she was in Abyssinia, she saw a church, called Māriyah, that had images, decorations, and drawings therein and she was amazed at that. The Prophet (may Allah's peace and blessings be upon him) clarified the reason behind using such images. He said: Those people, whom you mentioned, whenever a righteous man among them died, would build a place of worship over his grave and make such images. He (may Allah's peace and blessings be upon him) clarified that whoever does this is counted among the most evil people in the sight of Allah Almighty because his deed leads to associating partners with Allah Almighty.

1. It is prohibited to build mosques over graves, pray at graves, or bury the dead in mosques to block the means to Shirk (polytheism).
2. Building places of worship over graves and putting images therein are practices of the Jews and Christians. So, whoever does this has acted like them.
3. It is prohibited to acquire images of living beings.
4. Whoever builds a mosque over a grave and puts images therein is one of the most wicked people.
5. The Shariah is keen on fully protecting the soundness of Tawhīd (monotheism), as it blocks all means that may lead to Shirk.
6. Exaggeration in honoring righteous people is prohibited because it leads to falling in Shirk.

صحيح البخاري (1/ 94) (434). صحيح مسلم (1/ 375) (528). مرقاة المفاتيح، لعلي القاري (7/ 2857). توضيح الأحكام مِن بلوغ المرام، لعبد الله البسام (2/ 115). فتح ذي الجلال والإكرام شرح بلوغ المرام، لابن عثيمين (1/ 598). منحة العلام في شرح بلوغ المرام، لعبد الله الفوزان (2/ 469). تيسير العلام شرح عمدة الأحكام، لعبد الله البسام (ص290). الجديد في شرح كتاب التوحيد، لمحمد القرعاوي (ص183). الملخص في شرح كتاب التوحيد، لصالح الفوزان (ص168).