Sufism In Islam
https://youtu.be/gJFZeDQcliU?si=VLPWUxzkT9xBLhiFhttps://youtu.be/Jl4G8-790eI?si=yWGtfMTp0qoHiHPB Prominent personality i believe is Imam Ghazali. His literary work is impressive and also controversial for some.