What is the ruling on the book "Mafatih al-Faraj li-Tarwih al-Qulub wa Tafrij al-Kurub" (Keys to Relief for Comforting Hearts and Dispelling Anxieties), which is widespread among people, and are the hadiths and supplications mentioned in it authentic?

This book has not been reviewed. Sheikh Mashhour Hassan stated in his book Books Warned Against by Scholars (2/211) that its author compiled it from Sufi litany books which contain falsehoods, lies, and superstitions. It also includes innovated prayers such as: the Prayer of Need for a Thousand Needs, the Prayer for Relief from Hardship, the Prayer for the Lost and Fugitive, the Prayer of Majesty (Salat Jalal), the Prayer of the Opener (Salat al-Fatih), the Prayer of the Beloved (Salat al-Habib al-Mahboub), the Prayer of Relief (Salat al-Tafrijiyyah), and the Prayer of Deliverance (Salat al-Munjiyah).