It is a well known historical fact that in spreading the ethical and spiritual values of Islam, major and effective contributions have been Made by the Walis of ALLAH (saints). It was their humanistic position, and piety which won over the hearts of lacs of people. They made a direct contact with the masses served and loved them, lived with them in the realization of Eternal Truth. The proof of this is more than evident from the history of growth of Islam in India. Although Islam had penetrated in this subcontinent in the first century of Hijra. Tasawwuf is a branch of Islamic knowledge which focuses on the spiritual development of the Muslim. Allah sent His final messenger, Prophet Muhammad SAW , as a source of knowledge for the entire ummah. He was the fountain of Quran, Hadith, tafsir, rhetoric, fiqh, and so on. After the Prophet, the scholars of this ummah carried and propagated each of these branches of knowledge. Because no one person can attain the perfection of the Prophet SAW, who single handedly assumed all of these roles, various branches of the Islamic sciences developed. For example, Imam Abu Hanifah RA preserved the science of fiqh and after him thousands of scholars continued in his footsteps. Hence these scholars preserved the fiqh of the Prophet . Similarly Imam Bukhari and the other famous scholars of Hadith, preserved the words of the Prophet. The scholars of tajweed preserved the recitation of the Prophet . And, the scholars of Arabic grammar preserved the language of the Prophet .
Along these lines, the Prophet was the model of spirituality for the world. His God-consciousness, deep spirituality, acts of worship, and love for Allah were preserved and propagated by an Islamic science called Tasawwuf. The aim of the scholars of this science was purification of the heart, and development of consciousness of Allah through submission to the shariah and sunnah.