The Tahlil (Arabic: تَهْلِيل, tahlīl, Arabic pronunciation: [tah.liːl]), also spelled Tahleel, is a form of dhikr that involves the praising of God in Islam by saying lā ʾilāha ʾillā -llāhu (لَا إِلَٰهَ إِلَّا ٱللَّٰهُ), meaning "There is none worthy of worship except Allah".
The word Tahlil is the verbal noun of the form 2 verb Hallala (هَلَّلَ) which literally means '"to praise" or "to acclaim".
Traditionally, the utterance of the sentence is part of the shahada performed by somebody converting to Islam. Later on, it became a tradition practiced as a ritual of Sufism during events like the remembering of a dead Muslim. Performing Tahlil to remember the dead is considered bidʻah by Salafi Muslims, and the practice itself is known specifically as niayah.
In Indonesia and Malaysia, ritualized repetitive chanting of the tahlil is part of the tradition of kenduri, which is common during death rituals. The custom is known locally as majlis tahlil "assembly to perform prayers". This practice is more common among Muslims that are followers of the traditionalist Nahdlatul Ulama movement.
Narrated by Abu Huraira: The Messenger of Allah said, "He who utters a hundred times in a day these words: `La ilaha illallahu, wahdahu la sharika lahu, lahul-mulku wa lahul-hamdu, wa Huwa `ala kulli sha'in Qadir (there is nobody worthy of worship except Allah. He is One and He has no partner with Him; His is the sovereignty and His is the praise, and He is Omnipotent),' he will have a reward equivalent to that for emancipating ten slaves, a hundred good deeds will be recorded to his credit, hundred of his sins will be blotted out from his scroll, and he will be safeguarded against the devil on that day till the evening; and no one will exceed him in doing more excellent good deeds except someone who has recited these words more often than him
Malik ibn Anas reported from Talha ibn Ubaydullah ibn Kariz that Muhammad said, "The best dua is dua on the day of Arafa, and the best thing that I and the Prophets before me have said is "There is nothing worshipped but Allah, alone without any partner" (La ilaha illa'llah, wahdahu la sharika lah)" 
- Peace be upon him
- Glossary of Islam
- Anthem of the Chechen Republic of Ichkeria, which repeats the tahlil throughout
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- ^ "The Arabic verb forms". Retrieved November 22, 2015.
- ^ Aziz, Muhammad Ali (2011). Religion and Mysticism in Early Islam: Theology and Sufism in Yemen. Vol. 26. I.B.Tauris. ISBN 978-0-857719607. Retrieved November 19, 2015.
- ^ "Tahlilan (Selamatan Kematian) Adalah Bid'ah Munkar Dengan Ijma Para Shahabat Dan Seluruh Ulama Islam" (in Indonesian). Retrieved November 19, 2015.
- ^ "Majlis tahlil in English with contextual examples". MyMemory. Retrieved 14 July 2021.
- ^ Ismail, Faisal (2003). Islamic traditionalism in Indonesia: a study of the Nahdlatul Ulama's early history and religious ideology (1926-1950). Proyek Peningkatan Pengkajian Kerukunan Hidup Umat Beragama, Puslitbang Kehidupan Beragama, Badan Litbang Agama dan Diklat Keagamaan, Departemen Agama R.I. ISBN 978-9-793370699. Retrieved November 19, 2015.
- ^ Sahih Muslim
- ^ Muwatta of Imam Malik