Tasawwuf can be called the inwardness of Islam. Islam, like most other faiths, to a greater or lesser extent consists firstly of certain beliefs, such as the existence of God, the coming of the Judgement, reward and punishment in the next life, and the outward expression of these beliefs in forms of worship, such as prayer and fasting, all of which are concerned with man's relationship to God. Secondly, it consists of a system of morality which concerns man's relationship with man, and has its outward expression in certain social institutions and laws, such as marriage, inheritance, civil and criminal laws. But it is obvious that the basis of
this faith, the spirit that gives it life, is man's relationship with God. Forms of worship are simply the physical vehicles of this relationship, and it is this relationship again which is responsible for the origin, the significance and the ultimate sanction of the principles of morality and their formulation into a specific social and legal system. If the interior converse with the Supreme Being and inspiration from Him are present, then they are comparable to the soul within the body of the exterior religion; if they die away, or in proportion to the extent they wither or become feeble, the outward form of the faith becomes like a soul-less body, which by the
inexorable law of nature swiftly succumbs to corruption. It is therefore man's direct relationship with his Maker which is the breath and life of religion, and it is the study and cultivation of this relationship that the word Tasawwuf connotes.