قلعة دمشق
In 1310, Ibn Taymiyyah had written a "risāla" (treatise) called "Ziyārat al-Qubūr" or according to another source, "Shadd al-rihal". It dealt with the validity and permissibility of making a journey to visit the tombs of prophets and saints. It is reported that in the book "he condemned the cult of saints" and declared that visiting Muhammad's grave was a blameworthy religious innovation. For this, Ibn Taymiyyah, was imprisoned in the Citadel of Damascus sixteen years later on 18 July 1326, aged 63, along with his student Ibn Qayyim. The sultan also prohibited him from issuing any further fatwas. Hanbali scholar Ahmad ibn Umar al-Maqdisi accused Ibn Taymiyah of apostasy over the treatise.