Tasawwuf is Obligatory upon Every Muslim
After explaining the affairs of the heart, Allama Shami Rehmatullah Alaih has concluded that: "Therefore, it is obligatory upon every believer to acquire the knowledge of Tasawwuf as much as he/she considers essential for the reformation of his or her Nafs (self). It is compulsory to cleanse one's self from base morals." (Daur Mukhtar Vol: 1 - The Discussion of the Knowledge of the Heart] via Dalail-as-Salook.
