Nafs is a veil between Allah and His slave. If nafs is removed, there remains no veil between Allah and His slave. This veil of nafs is commonly known as “spiritual vile” or “vile of nafs”. These spiritual vile or vile of nafs include arrogance, pride, vanity, jealousy, narcissism, pretence, grudge, falsehood and sensual desires like sensual desire of appetite, sexual desire and lust for prominence and fame etc. It is obligatory upon everyone to get rid of these spiritual ailments. This book “Nafs Kay Nasoor” written by Sultan-ul-Ashiqeen Hazrat Sakhi Sultan Mohammad Najib ur Rehman. In his book he has explained spiritual ailments in the light of Quran and Hadiths in detail so that a seeker of Allah becomes fully aware of these ailments and can save himself from them.