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Calligraphic panel with prayer in thuluth, which reads "the grasping of God brings the knowledge of His comfort". The later inscription attributed this work to Alaeddin Tabrizi. Library of Congress Arabic prayer - Thuluth script (cropped).jpg
Calligraphic panel with prayer in thuluth, which reads "the grasping of God brings the knowledge of His comfort". The later inscription attributed this work to Alaeddin Tabrizi. Library of Congress

Thuluth (Arabic : ثُلُث, Ṯuluṯ or Arabic : خَطُّ الثُّلُثِ, Ḵaṭṭ-uṯ-Ṯuluṯ; Persian : ثلث, Sols; Turkish: Sülüs, from thuluth "one-third") is a script variety of Islamic calligraphy. The straight angular forms of Kufic were replaced in the new script by curved and oblique lines. In Thuluth, one-third of each letter slopes, from which the name (meaning "a third" in Arabic) comes. An alternative theory to the meaning is that the smallest width of the letter is one third of the widest part. It is an elegant, cursive script, used in medieval times on mosque decorations. Various calligraphic styles evolved from Thuluth through slight changes of form.



The greatest contributions to the evolution of the Thuluth script occurred in the Ottoman Empire in three successive steps that Ottoman art historians call "calligraphical revolutions":


The best known artist to write the Thuluth script at its zenith is said to be Mustafa Râkım Efendi (1757–1826), a painter who set a standard in Ottoman calligraphy which many believe has not been surpassed to this day. [8]


Thuluth was used to write the headings of surahs, Qur'anic chapters. Some of the oldest copies of the Qur'an were written in Thuluth. Later copies were written in a combination of Thuluth and either Naskh or Muhaqqaq. After the 15th century Naskh came to be used exclusively.

The script is used in the Flag of Saudi Arabia where its text, Shahada al Tawhid , is written in Thuluth.


An important aspect of Thuluth script is the use of harakat ("hareke" in Turkish) to represent vowel sounds and of certain other stylistic marks to beautify the script. The rules governing the former are similar to the rules for any Arabic script. The stylistic marks have their own rules regarding placement and grouping which allow for great creativity as to shape and orientation. For example, one grouping technique is to separate the marks written below letters from those written above.

Scripts developed from Thuluth

Since its creation, Thuluth has given rise to a variety of scripts used in calligraphy and over time has allowed numerous modifications. JeliThuluth was developed for use in large panels, such as those on tombstones. Muhaqqaq script was developed by widening the horizontal sections[ clarification needed ] of the letters in Thuluth. Naskh script introduced a number of modifications resulting in smaller size and greater delicacy. Tawqi is a smaller version of Thuluth.

Ruq'ah was probably derived from the Thuluth and Naskh styles, the latter itself having originated from Thuluth.

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