Verily, he who has purified the heart is successful and he who has despoiled it has lost.
Many people have misunderstandings about tasawwuf.
Many think that it is something beyond the Qur'an and Sunnah. Errant Sufis as well as the superficial ulema, although on the opposite ends of the spectrum, are together in holding this mistaken notion. Consequently the first group has shunned the Qur'an and Hadith while the second group has shunned tasawwuf. Actually, although the term tasawwuf, like many other religious terms in use today, evolved later, the discipline is very much part of the Shariah. The department of the Shariah relating to external deeds like salat and zakat is called fiqh while the one dealing with the internal feelings and states of the heart is called tasawwuf.