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Tazkiyat al-Nafs: The Work of Cleaning a Heart
The Qur'an credits a purified soul to the person who purified it — then the Prophet's own private prayer asks Allah to do exactly that. Read together with a hadith about the smallest trace of pride and one about a grudge between two believers, the two texts describe purification as work claimed by the self and only ever finished by God.
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Author:The Quran Gallery team
Sūrat al-Shams builds toward its point through an oath, not an argument. Eleven times the chapter swears — by the sun, the moon, the day that reveals it, the night that conceals it, the sky, the earth — before it finally names the thing all of that swearing was for:
وَنَفْسٍ وَمَا سَوَّىٰهَا فَأَلْهَمَهَا فُجُورَهَا وَتَقْوَىٰهَا قَدْ أَفْلَحَ مَن زَكَّىٰهَا وَقَدْ خَابَ مَن دَسَّىٰهَا “And by the soul and He who proportioned it, and inspired it with [discernment of] its wickedness and its righteousness — successful indeed is the one who purifies it, and doomed is the one who buries it.”
— Sūrat al-Shams, 91:7–10.
The two closing verbs are worth sitting with. Zakkāhā — “purified it” — and dassāhā, which does not simply mean “corrupted.” Its root is the one used for burying something in the ground, tucking it out of sight. The soul that loses is not described as one that was destroyed. It is described as one that was buried alive, still there, still capable, just never let out. Both verbs take the same grammatical shape: a person, doing something, to the soul. The Qur’an is not describing purification as a mood that settles over someone. It is describing it as a project a person either undertakes or declines.
A Prayer That Asks for What the Verse Just Credited to the Person
If that verse is right — if the one who purifies the soul is the one who succeeds — then the record of what the Prophet, peace and blessings be upon him, actually prayed for is worth reading closely, because he did not pray as though the work were his alone to finish. Zayd ibn Arqam, one of his companions, reported a set of private supplications the Prophet repeated often enough that Zayd felt able to teach them rather than merely narrate them:
اللَّهُمَّ آتِ نَفْسِي تَقْوَاهَا، وَزَكِّهَا أَنْتَ خَيْرُ مَنْ زَكَّاهَا، أَنْتَ وَلِيُّهَا وَمَوْلَاهَا، اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ عِلْمٍ لَا يَنْفَعُ، وَمِنْ قَلْبٍ لَا يَخْشَعُ، وَمِنْ نَفْسٍ لَا تَشْبَعُ، وَمِنْ دَعْوَةٍ لَا يُسْتَجَابُ لَهَا “O Allah, grant my soul its taqwā, and purify it — You are the best to purify it, You are its guardian and its master. O Allah, I seek refuge in You from knowledge that does not benefit, a heart that does not submit, a soul that is not satisfied, and a prayer that goes unanswered.”
— Ṣaḥīḥ Muslim, hadith 2722, printed page 4/2088 of . A note printed with this edition points out that “khayr” here is not a comparative — the Prophet is not saying Allah purifies best among several who could do it. The sense is closer to: there is no purifier of the soul but You.
Put the two texts next to each other and the apparent tension resolves rather than deepens. Sūrat al-Shams credits “the one who purifies it” with success; the Prophet’s own prayer insists that only Allah truly purifies. Both are true because they are naming different halves of the same act. The verse names the one who does the turning, the reaching, the asking. The prayer names the one who does the actual cleaning once the turning has happened. Tazkiyah is not a private accomplishment a person racks up alone, and it is not something that happens to a passive person either. It is a request a person has to make, repeatedly, with their own effort behind it.
Notice, too, how specific the request gets. The Prophet did not ask, in general terms, to become a better man. He named a heart that does not submit and a soul that is not satisfied — the edition’s note glosses the second phrase as a plea against greed, ambition without a ceiling, a self that keeps reaching for what is further away rather than resting in what is already given. Purification, on this evidence, is not a mood. It has named failure states. Two of them turn up in the very next hadiths worth reading.
The Weight That Disqualifies a Heart Outright
The first failure state the Prophet named — a heart that does not submit — has a hadith devoted almost entirely to it, and the arithmetic in that hadith is deliberately unbalanced. Abdullah ibn Mas’ud reported this from the Prophet, peace and blessings be upon him:
لَا يَدْخُلُ الْجَنَّةَ مَنْ كَانَ فِي قَلْبِهِ مِثْقَالُ ذَرَّةٍ مِنْ كِبْرٍ “No one will enter Paradise who has, in his heart, the weight of a speck of pride.”
— Ṣaḥīḥ Muslim, hadith 91, printed page 1/93 of .
A man in the gathering pushed back, and the hadith preserves his objection rather than editing it out: he liked his clothes to look good and his sandals to be handsome — was that pride? The Prophet’s answer did not soften the ruling. It relocated it. Allah is beautiful, he said, and loves beauty; that is not what kibr means. Kibr is batar al-ḥaqq wa ghamṭ al-nās — rejecting the truth, and holding people in contempt.
That definition is doing more work than it looks like it is doing. It moves pride away from anything a person wears or owns and puts it exactly where the earlier prayer put its own concern — at the heart, and specifically at what the heart does when it is corrected. Batar al-ḥaqq is not disagreeing with a fact. It is the reflex of pushing truth away because accepting it would cost something. A heart with that reflex installed is, in the plainest sense, “a heart that does not submit” — the very thing the Prophet asked, in private, to be protected from. The disproportion in the hadith — a single speck of something, weighed against the whole of Paradise — is not the text overstating a minor vice. It is the text insisting that the smallest trace of an uncorrectable heart is already the whole problem, because a heart that will not be corrected is a heart that has closed the very door tazkiyah has to enter through.
The Same Grudge, Reviewed Twice a Week
The second failure state — a soul that is not satisfied — has an obvious partner in envy and want. But there is a second hadith, about a related but distinct condition of the heart, that shows how seriously the tradition treats a person’s dealings with someone else, not just their appetite for what someone else has. Abu Hurayrah reported it:
تُفْتَحُ أَبْوَابُ الْجَنَّةِ يَوْمَ الِاثْنَيْنِ وَيَوْمَ الْخَمِيسِ، فَيُغْفَرُ لِكُلِّ عَبْدٍ لَا يُشْرِكُ بِاللَّهِ شَيْئًا، إِلَّا رَجُلًا كَانَتْ بَيْنَهُ وَبَيْنَ أَخِيهِ شَحْنَاءُ، فَيُقَالُ: انْظُرُوا هَذَيْنِ حَتَّى يَصْطَلِحَا “The gates of Paradise are opened on Monday and on Thursday, and every servant who associates nothing with Allah is forgiven — except a man between whom and his brother there is enmity. It is said: leave these two until they reconcile.”
— Ṣaḥīḥ Muslim, hadith 2565, printed page 4/1987 of . The instruction to set the two aside is repeated three times in the hadith’s own wording.
What the hadith describes is not a punishment; it is a suspension. Everyone else’s record is dealt with that day. The two who are holding shaḥnāʾ against each other are not condemned — they are held, unreviewed, until the reconciliation happens. It is a small, recurring, almost administrative image of something the Qur’an says about the far larger review still to come, when Sūrat al-Shu’arā’ warns that on that Day “neither wealth nor children will be of any benefit — only one who comes to Allah with a sound heart”:
يَوْمَ لَا يَنفَعُ مَالٌ وَلَا بَنُونَ إِلَّا مَنْ أَتَى ٱللَّهَ بِقَلْبٍ سَلِيمٍ “The Day when neither wealth nor children will benefit anyone, except one who comes to Allah with a sound heart.”
— Sūrat al-Shu’arā’, 26:88–89.
A qalb salīm, a sound heart, is not defined in that verse by what it possesses. It is defined by what it is not carrying. The weekly hadith about Monday and Thursday is, in effect, a smaller rehearsal of the same standard — held twice a week, for as long as the grudge lasts, until it is let go.
Read the four texts as one argument rather than four separate reports and a shape emerges. The Qur’an credits the soul’s purification to the person who does it, and names burial as the failure — something left in the ground rather than brought out. The Prophet’s own prayer asks Allah to do the purifying he had just been credited with, because the labor of turning and the power to actually clean are not the same thing. And the two conditions his prayer named by name — a heart that will not submit, a soul that is never satisfied — turn out to have hadiths of their own: one that will not let even the smallest trace of an unyielding heart into Paradise, and one that holds an unresolved grudge outside the weekly forgiveness until it is resolved. None of the four texts describes tazkiyah as a feeling to cultivate. Each one describes it as something specific enough to name, and — twice a week, if the hadith about Monday and Thursday means what it says — specific enough to be checked.
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