https://abukhadeejah.com/kitab-at-tawheed-chapter-19-the-reason-for-the-disbelief-of-the-children-of-adam-was-their-abandonment-of-their-religion-by-exaggeration-in-praise-of-the-pious-folk/
Chapter 19: The reason for the disbelief of the Children of Adam was the abandonment of their Religion by exaggeration in praise of the pious folk: Kitāb at-Tawheed.