well alright but they both the qalanders isolated from the worldly matters and searched for the deep mystic knowledge of Quran.
Bu Ali Qalander even asked Allah for making him Imam Ali a.s after 36 years of chilla( retreat) ,but instead he was given the fragnance of Imam Ali a.s (the name).
well mysticism is to search for islams mystical and hidden knowledge. For instance ; When Hazrat Ali was asked whether he has seen Allah .He responded "Yes, by the inward eyes of his heart." Similarly Allah has quoted in Quran that " Allah is near than a person than his Artery"
A normal man cannot comprehend these deep meaning statements.