Purification of the self (tazkiyah) — the diseases of the heart, sincerity, and their opposites.
Tazkiyah (purification of the self) is the ongoing inward work of cleansing the heart of destructive qualities and cultivating good ones — the inner counterpart to the outward conduct covered in the Akhlaq lesson. The Qur’an ties this directly to a person’s ultimate outcome, twice, in similar terms: “He has succeeded who purifies it, and he has failed who instills it [with corruption]” (91:9–10), and “He has certainly succeeded who purifies himself” (87:14).
Classical scholarship on tazkiyah describes a number of “diseases of the heart” to guard against and work to remove. Pride (kibr) is described in unusually strong terms: “He who has in his heart the weight of a mustard seed of pride shall not enter Paradise” (Sahih Muslim, 267). Destructive envy (hasad) — wishing a blessing were taken from someone else, not merely wishing you had the same — is warned against, though a hadith narrows what is actually praiseworthy to aspire to: “There is no envy except in two: a person whom Allah has given wealth and he spends it rightly, and a person whom Allah has given wisdom and he acts by it and teaches it to others” (Sahih al-Bukhari, 1409) — meaning admiring and wanting to emulate someone’s good use of a blessing, not resenting that they have it.
Sincerity (ikhlas) — doing things for Allah’s sake rather than to be seen or praised — sits at the centre of tazkiyah, opening one of the most widely cited hadith collections: “The reward of deeds depends upon the intentions, and every person will get the reward according to what he has intended” (Sahih al-Bukhari, 1). Its direct opposite, showing off (riya), is warned against sharply: “He who does good things in public to show off and win the praise of the people, Allah will disclose his real intention [on the Day of Resurrection]” (Sahih al-Bukhari, 6499).
Tazkiyah is not a one-time achievement but ongoing, unglamorous work — noticing pride, envy or a desire to be seen in yourself, and consciously working against it, is itself part of the practice, not a sign of having failed at it. This lesson introduces the concept and its core themes; classical Islamic scholarship treats the diseases of the heart and their remedies in far more depth than is covered here.
Key points
- Tazkiyah is the ongoing inward work of purifying the heart, tied by the Qur'an directly to a person's ultimate success or failure (91:9-10, 87:14).
- Pride (kibr) is warned against in strong terms — even a mustard seed's weight of it is said to bar someone from Paradise.
- Destructive envy (hasad) is distinguished from admiring and wanting to emulate someone's good use of a blessing, which a hadith treats as praiseworthy.
- Sincerity (ikhlas) — acting for Allah's sake rather than to be seen — sits at the centre of tazkiyah; its opposite, showing off (riya), is warned against sharply.
Qur’an
“He has succeeded who purifies it, And he has failed who instills it [with corruption].”
Surah Ash-Shams (91) — 91:9-10
“He has certainly succeeded who purifies himself”
Surah Al-A'la (87) — 87:14
Hadith
It is narrated on the authority of 'Abdullah that the Messenger of Allah observed:He who has in his heart the weight of a mustard seed of pride shall not enter Paradise
Sahih Muslim, no. 267 .
Narrated Ibn Mas`ud:I heard the Prophet saying, "There is no envy except in two: a person whom Allah has given wealth and he spends it in the right way, and a person whom Allah has given wisdom (i.e. religious knowledge) and he gives his decisions accordingly and teaches it to the others
Sahih al-Bukhari, no. 1409 .
Narrated 'Umar bin Al-Khattab: I heard Allah's Messenger saying, "The reward of deeds depends upon the intentions and every person will get the reward according to what he has intended. So whoever emigrated for worldly benefits or for a woman to marry, his emigration was for what he emigrated for
Sahih al-Bukhari, no. 1 .
Narrated Jundub:The Prophet said, "He who lets the people hear of his good deeds intentionally, to win their praise, Allah will let the people know his real intention (on the Day of Resurrection), and he who does good things in public to show off and win the praise of the people, Allah will disclose his real intention (and humiliate him)
Sahih al-Bukhari, no. 6499 .
Hadith text and grading above are shown as supplied by their source. HikmahBridge does not grade Hadith itself. See Sources & Methodology.
Scholarly notes
Classical scholarship on tazkiyah al-nafs (purification of the soul) treats the diseases of the heart — pride, envy, showing off, and others such as anger, greed and love of status — and their remedies in far more depth and structure than this introductory lesson covers. This is a framework-level introduction, not a substitute for that deeper study, ideally with a qualified teacher.
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