Is there a specific legitimate ruqyah or method—such as reciting Surat Al-Baqarah over water—to deal with severe intrusive thoughts that appear after committing to religious practice? And what is the reason for the persistence of these intrusive thoughts despite my regular recitation, listening to, and engaging with Surat Al-Baqarah and the Mu'awwidhat?

There is no specific ruqyah for obsessive-compulsive disorder (OCD), but general supplications (du'a) and ruqyah shar'iyyah (Islamic exorcism) are beneficial. The persistence of OCD after ruqyah is due to the servant's strength of conviction, presence of heart, and the absence of impediments. Al-Suyuti and Al-Zarkashi emphasized that benefiting from the properties of the Quran is achieved by those who believe, contemplate, and act upon it. Ibn al-Qayyim clarified that du'a is a weapon, and its effectiveness depends on the righteousness of the supplication, the strength of the supplicant, and the removal of impediments. Al-Manawi explained that the weakness of a du'a may be due to a weak heart or the presence of impediments, such as consuming unlawful earnings.