Arud
Quick answer: Arud is the classical science of poetic metre in Arabic, Persian and Urdu, founded by al-Khalil ibn Ahmad. Learn how scansion by syllable weight works.
Arud is the classical science of poetic metre in Arabic, and by inheritance in Persian, Urdu and Turkish: the complete system for measuring verse, naming its metres and detecting when a line breaks the rules. Tradition credits its invention to al-Khalil ibn Ahmad al-Farahidi, the eighth-century lexicographer of Basra, who is said to have heard the patterns of poetry in the rhythmic hammering of the coppersmiths' bazaar and set out to map every metre the language used.
If bahr names an individual metre, arud is the whole map. It works by syllable weight rather than stress: syllables are light or heavy depending on their length and shape, and metres are patterns of those weights. Poets in these traditions learn at least its practical arm, taqti, the scansion of a line, because editors, rivals and audiences all check.
How the System Measures a Line
Arud breaks every line into feet, arkan, which are themselves remembered through model words like faulun and mafailun whose own syllables encode the pattern. A light syllable is a consonant plus short vowel, like the first beat of 'karam'; a heavy one is long or closed, like 'kaar' or 'kar' at rest. Al-Khalil arranged the sixteen Arabic metres in five circles, showing how rotating one pattern generates another, a piece of eighth-century mathematics that still impresses metrists. Persian and Urdu adapted the toolkit, discarded some metres and promoted others.
Arud in the Poet's Working Life
For centuries a poet's apprenticeship included scanning the masters line by line. In Urdu culture the checking survives: at a traditional gathering, a line out of metre is a public stumble, and senior poets correct juniors by ear alone. The trained ear is the real product of arud. The tables and circles are scaffolding; what remains is a musician's certainty about where the next heavy syllable must fall.
What an English-Language Poet Can Take
English metre counts stresses, so arud does not transplant directly, but its habits do. Scan by sound, not by sight. Learn a few patterns deeply instead of many shallowly. Treat metre as a contract with the listener that you break only on purpose. A useful exercise: take one of your free-verse lines and write three metrical variants of it, noticing what each regularity adds or kills. That is arud thinking, applied anywhere.
What poets can take from this
- Learn taqti, practical scansion, before theory; the circles can wait, the ear cannot.
- Scan lines you love aloud, tapping light and heavy syllables, until patterns become physical.
- Remember that arud measures length of syllables, not loudness; it is quantity, not stress.
- Use model words like faulun as rhythm templates when composing in metre.
- When a line will not scan, suspect a lazy phrase; metre trouble usually marks thought trouble.
Try it yourself
Invent a two-word rhythm template, such as da-DUM-da DUM-da, and write eight lines that follow it exactly, then break the pattern once, deliberately, where the meaning turns.
Questions
What is the difference between arud and bahr?
Arud is the entire science of metre, the rulebook and its methods. A bahr is one particular metre defined within that science, so arud contains the bahrs.
Who invented arud?
Tradition credits al-Khalil ibn Ahmad al-Farahidi of Basra in the eighth century. He catalogued the metres of Arabic poetry and arranged them in five generative circles, a framework later adapted by Persian, Urdu and Turkish poetics.
What is taqti?
Taqti is scansion, the practical act of cutting a line into its metrical feet to check that it fits its bahr. It is the everyday, working end of the science of arud.
By the Writory editorial team, reviewed by working poets. Updated July 2026.
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