Ikhlas
ikh-LAAS
Sincerity stripped of all audience — the deed done when only Allah is watching.
Ikhlas is sincerity — the purification of an act from any motivation other than Allah. It is what remains when the desire for praise has been removed, when the fear of criticism has been removed, when the hope for social reward has been removed. What is left is the deed done for Allah alone. The scholars called it "the secret of secrets" because it is invisible to everyone except Allah and barely legible even to the person themselves.
The Quran names an entire surah Al-Ikhlas (Surah 112), and while that surah is about the purity and oneness of Allah's nature (the word ikhlas in that context refers to Allah's transcendence of mixture or partnership), the spiritual concept of ikhlas as sincerity flows directly from it: just as Allah is free of all mixture and associate, so the sincere worshipper's deed is free of mixture with anything other than Allah. When the scholars want to give the highest praise to an act of worship, they say it was done with ikhlas — undiluted, unreservedly for Allah.
Ikhlas is what makes deeds weigh on the scale. The scholars of the heart say: a small deed done with ikhlas outweighs a large deed done with riya' (ostentation). The Prophet ﷺ was asked who would receive his intercession: he said the one who says "la ilaha illa Allah" with ikhlas from the heart. Not the one who says it most often, not the one who says it loudest — the one who says it sincerely. Ikhlas is the soul of every act; without it, the body of the act is there but the spirit has left.
Root occurrence breakdown
The root kh–l–ṣ appears approximately 31 times in the Quran in various forms. The most significant occurrence is Surah Al-Ikhlas itself, whose name encapsulates both the purity of Allah's oneness and the sincerity demanded of the worshipper.
Key ayahs
وَمَآ أُمِرُوٓا۟ إِلَّا لِيَعْبُدُوا۟ ٱللَّهَ مُخْلِصِينَ لَهُ ٱلدِّينَ
“And they were not commanded except to worship Allah, sincere to Him in religion.”
The most direct Quranic statement of what religion ultimately demands: to worship Allah with ikhlas. The scholars say this verse contains the essence of the entire Quran. All the commands, all the prohibitions, all the beliefs — they are all in service of this: worship that is purified of everything other than Allah.
فَٱعْبُدِ ٱللَّهَ مُخْلِصًا لَّهُ ٱلدِّينَ ۗ أَلَا لِلَّهِ ٱلدِّينُ ٱلْخَالِصُ
“So worship Allah, sincere to Him in religion. Unquestionably, to Allah belongs pure religion.”
The phrase al-din al-khalis (the pure/sincere religion) is the Quranic definition of authentic worship. Al-Khalis is the superlative-intensified form of khalasa — utterly pure, free of all contamination. Pure religion is religion with ikhlas.
قُلْ هُوَ ٱللَّهُ أَحَدٌ ٱللَّهُ ٱلصَّمَدُ لَمْ يَلِدْ وَلَمْ يُولَدْ وَلَمْ يَكُن لَّهُۥ كُفُوًا أَحَدٌ
“Say: He is Allah, the One. Allah, the Self-Sufficient. He neither begets nor was He begotten. And none is comparable to Him.”
The surah named Al-Ikhlas. The Prophet ﷺ said it is equal to a third of the Quran in weight because it encapsulates tawhid — and tawhid is the theological basis of ikhlas. If God is utterly One, then worship directed to anything alongside Him is a failure of ikhlas at the level of theology, not just psychology.
Go deeper — surah pages