
{ The day on which property will not avail, nor sons; except
him who comes to Allah with a sound heart.} (26-88/9)
“Some formalists recognise only the science of the external
religious law comprised in the Quran and the Sunna, and
declare that the esoteric science, i. e. Tasawwuf or Sufism, is without
meaning. In fact, however, the science of the religious law (Sharia)
has an internal as well as an external aspect and inculcates
inward as well as outward actions. The outward actions are
bodily, such as hunger, fasting, almsgiving and the like,
while the inward actions, or the actions of the heart, are
faith, sincerity, knowledge of God, etc. The esoteric science
signifies the science of the actions of the interior which
depend on the interior organ, namely, the heart (al-qalb)
and is identical with Sufism. The inward aspect of religion
is the necessary complement of the outward aspect, and
vice versa. Both aspects are inherent in the Quran, in the
Traditions of the Prophet
, and in Islam itself.”
Abu Nasr `Abdallah b. `Ali al-Sarrâj al-Tusi (Kitab al-luma fi l-Tasawwuf)
Edited by Omar K Neusser This is the main page of our Tasawwuf section.
1- Definition:
Purification of the heart.
True devotion to Allah in the ways He likes by the means He likes.
... Acting upon knowledge;
Acquiring the good characters and getting rid of the bad.
2- Subject: Allah, as how He can be known; or hearts & souls, as how to purify them.
3- Fruit: The purification of the heart and knowing the Master of the worlds and attaining the Station of ihsân.
4- Merit: Tasawwuf is of high merit. Its nobility stems from its subject. Ihsân is one of the three levels of this deen and the highest.
5- Relation to other disciplines: It is the base of the Sharia; without it acts of worship become imperfect. It is the core of Quran and Sunnah and the tissue of Muslims spiritual life.
6- Name: The word "tasawwuf" is derrived from souf (wool). Tasawwuf has been known by this name since the second century of hijra, i.e. the time of the salaf. It has been frequently called `ilm as-Sulûk (initiatic traveling & spiritual behaviour), `ilm al-Ihsân, `ilm at-Tarbiyah (cultivation) or `ilm at-Tazkiyah (purification).
7- The pioneer:
The pioneer of this branch of knowledge is of course the Prophet
. Many hadiths highlight the spiritual dimension of a Muslim's life.[2.2] The earliest scholar who elaborated on it is al-Hasan al-Basriy.
8- Sources: Tasawwuf is derived from Quran and Sunnah[2.1].The sayings of the great scholars represent a rich treasure for the seekers and the masters.[07]
9- Ruling:
Acquiring tasawwuf is fard i.e. obligatory; since all human beings are susceptable to sins save for Prophets. Imam Abul Hasan ash-Shadiliy said:
“He who does not truly acquire this discipline will die persisting on major sins without being aware of it.”
10- What it tackles:
Tasawwuf tackles some of the cardinal elements of the deen such as sincerity; truthfulness; religious cautioness (wara'); conscious awareness (khushû') reliance; asceticism; love; and similarly their opposites, which are the diseases of the hearts such as insincerity; hypocrisy; arrogance; greed etc.
It also tackles subtle subjects such as the passing of thoughts; the states of the heart; inspirations. One of its most important subjects is dhikr, the remembrance (i.e. in the evocation & recitation of the name) of Allah and its virtues; another is the shaykh and his qualifications, the disciple, murid, and his adab.

Al-Ghafûr:
the All-forgiving i.e. the One who forgives every thing, all things
Al-Ghaffâr:
the Forgiving all the time of the sins, i.e. the Often-Forgiving.
As a matter of fact the amount of proof is too numerous to list here, and this is so, because Tasawwuf - Sufism is nothing less than the heart of the religion (dîn):
“Being the heart of the Islamic message it is, like the physical heart, hidden from external view, although again like the heart it is the inner source of life and the centre which coordinates inwardly the whole religious organism of Islam. The Tarîqah is the most subtle and difficult aspect of Islam to understand at the same time that its external effect is to be seen in many manifestations of Islamic society and civilisation.” [k/trq_e]
2.1 Tasawwuf in Traditional IslamThere are the evident corrupt acts, to be seen by everyone and the concealed corrupt acts:

{Say: My Lord has only prohibited indecencies, those of
them that are apparent as well as those that are concealed,-} (7-33)
It is the function of the science of Tasawwuf to heal (the heart of) the believer even from the concealed corrupt acts, such as blind hatred, ostentation, envy, hypocrisy. For this there are methods, disciplines[033] and doctors of hearts[3.4].
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The Messenger of Allah
replied to angel Gabriel's (pbuh) question on Ihsan (perfection), that it is "to worship Allah as if you see Him, and if you cannot (yet) see Him, then be sure that He is seeing you."
A sound and famous hadith in Al-Bukhari, vol. 1, no. 47; narrated by Abu Huraira.[o/gh_e]
*sound heart (~ the organ of knowledge):
“A heart in which the affectations of the mind do not arise, and which is safe from the distractions of all that is not God.” [CDS]
*diseased heart:
Shibli said: “A heart
ruled by the present world (dunyâ) is debarred from feeling the
sweetness of the world to come.”
Allah
warns us from the disease of the heart, which results in eternal damnation:

{ In their hearts is a disease, and Allah has caused their sickness to intensify.} (2-10)
The illness of the heart is of two types:
- suspicion and doubt, and
- desire, allurement and wantonness*.
Ibn Qayyim[MP3]
*(i.e. cruel, violent, sexually immodesty)
One's inward diseases are enough to cancel out one's good deeds - even if they are numerous.[PTP34]
*hadith:
“For every object there is a thing which polishes it and that which polishes the heart is remembrance (dhikr) of God.”
*Quran:
{ For without doubt in the remembrance (i.e. in the evocation & recitation of the name) of Allah do hearts find comfort.} (13-28)

{ Those who believe, and whose hearts find comfort in the remembrance of Allah. For without doubt in the remembrance (i.e. in the evocation & recitation of the name) of Allah do hearts find comfort.} (13-28)

There are several aspects to it, and all have to be taken account of. The beginning of it is when the servant accuses his own soul[m/pse_e], the continuation of it when he takes account of himself in all states, and strives against his ego, seeking recourse in Allah
. Then there will be blessings (barakah) and ease:
{ With hardship comes ease.} (94-5)


08 - Tasawwuf Shuyukh
081→ The scholars of the Sufis are the genuine followers of the salaf due to their fully connected chains leading back to them. This is the fact of the matter and is not a mere claim. They are the Muhammadan inheritors; those in whom Allah has gathered the inheritance of Sacred Knowledge and the inheritance of spiritual states.[SSK] Some of the following are:
Ibn `Arabi Hasan al-Basri
Abu Hanifa
Sufyan al-Thawri
Imam Malik
Imam Shafi`i
Ahmad bin Hanbal
Imam Ahmad
al-Muhasibi
al-Ju`i
al-Junayd
al-Tirmidhi
al-Baghdadi
al-Qushayri
al-Ansari
al-Ghazali
Ibn `Aqil al-Hanbali
al-Gilani
Ibn al-Jawzi
al-Shadhili
Ibn `Abd al-Salam
al-Nawawi
al-Maqdisi
Ibn Taymiyya
Ibn Taymiyya II
Ibn `Ata Allah I
Ibn `Ata Allah II
al-Subki
al-Shatibi
Ibn Khaldun
Al-Bistami
al-Sakhawi
al-Suyuti
al-Ansari
al-Haytami
al-Sha`rani
al-Qari
Ibn `Abidin
al-Mawdudi
notes:
Next page in the Tasawwuf series:
- About The Pure Heart - And What It Keeps Alive