ArticleslgStudy

science

Hudud al-'Alam

Hudud al-'Alam is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hudud al-'Alam rather than just read about it. In short: The Ḥudūd al-ʿĀlam (Arabic: حدود العالم, lit. 'Boundaries of the World', 'Limits of the World', or 'The Regions of the World') is a 10th-century geography book written in Persian by an anonymous author from Guzgan (present day northern Afghanistan), possibly Šaʿyā bin Farīghūn. The full title is حدود العالم من المشرق الی المغرب (Ḥudūd al-ʿĀlam min al-Mashriq ilá l-Maghrib, lit. "The Boundaries of the World from the…

Key takeaways

  • Hudud al-'Alam belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Hudud al-'Alam to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Hudud al-'Alam from memory before moving on to harder problems.

Reference excerpt

The Ḥudūd al-ʿĀlam (Arabic: حدود العالم, lit. 'Boundaries of the World', 'Limits of the World', or 'The Regions of the World') is a 10th-century geography book written in Persian by an anonymous author from Guzgan (present day northern Afghanistan), possibly Šaʿyā bin Farīghūn. The full title is حدود العالم من المشرق الی المغرب (Ḥudūd al-ʿĀlam min al-Mashriq ilá l-Maghrib, lit. "The Boundaries of the World from the East to the West"). The sections of its geographical treatise, which describes the margins of Islamic world, are of great historical importance, including early descriptions of the Turkic peoples in Central Asia. Also noteworthy is the archaic language and style of the Ḥudud, making it a valuable Persian linguistic document.

Contents In regards to the title, Vladimir Minorsky commented on it in his 1937 translation as follows: "The word ḥudūd (properly 'boundaries') in our case evidently refers to the 'regions within definite boundaries' into which the world is divided in the Ḥ.-'Ā., the author indicating with special care the frontiers of each one of these areas, v.i., p. 30." Finished in 982 CE, it was dedicated to Abu'l Haret Muhammad, the ruler of the Farighunids. Its author is unknown, but Vladimir Minorsky surmised that it might have been written by the enigmatic Šaʿyā bin Farīghūn. The available text of Ḥudūd al-ʿĀlam is part of a larger manuscript which contains other works:

A copy of the Jahān-Nāma ("Book of The World") by Muḥammad ibn Najīb Bakrān; A short passage about music; The Ḥudūd al-ʿĀlam; The Jāmiʿ al-ʿUlūm ("Collection of Knowledge") by Fakhr al-Din al-Razi; The Ḥudūd al-ʿĀlam contains information about the known world at the time. The anonymous author reports about different countries (nāḥiyat), people, languages, clothing, food, religion, local products, towns and cities, rivers, seas, lakes, islands, the steppe, deserts, topography, politics and dynasties, as well as trade. The inhabited world is divided into Asia, Europe and "Libya" (i.e. the Maghreb). The author counts 45 countries north of the equator. Among other things, Hudud al-Alam appears to mention a Rus' Khaganate; it refers to the Rus' king as "Khāqān-i Rus". The author never visited those countries personally, but rather compiled the book from earlier works and tales. He did not indicate his sources, but researchers deduced several 9th-century sources. Minorsky (1937) reconstructed them as follows:

Non-literary sources, including yādhkird-i haklmān ("memories of the sages"), akhbār ("information [heard]"; more fully ha-akhbār-hā ba-shanidim, "the information that we have heard"), and dhikr ("mention"). It is unclear whether or not these non-literary sources included the author's personal experiences, which were probably limited to his home region of Guzganan, and maybe Gilan. Books, called kitāb-hā-yipīshīnagān ("books of the predecessors"). (a) Ibn Khordadbeh (I.Kh.), Book of Roads and Kingdoms (Arabic: كِتَاب ٱلْمَسَالِك وَٱلْمَمَالِك, romanized: Kitāb al-Masālik wa-l-Mamālik). This work shows overlap with the similarly titled now-lost book Kitāb al-Masālik wal-Mamālik written by Abu Abdallah Muhammad ibn Ahmad al-Jayhani, and therefore these books were sometimes confused with each other. (b) An unknown source also used by Ahmad ibn Rustah, Al-Bakri, Gardizi, Muhammad Aufi, and others. This unknown source is usually identified as the lost book Kitāb al-Masālik wal-Mamālik written by Jayhani. (c) Istakhri (Ist.), Masālik al-Mamālik (مسالك الممالك, "Routes of the Realms") or kitab al-masalik wa-l-mamalik (Arabic: كتاب المسالك والممالك "Book of Roads and Kingdoms", or "Book of the Paths and Provinces"). As his source, Istakhri used the work of Abu Zayd al-Balkhi, the Figures of the Regions (Suwar al-aqalim), and thus he belonged to the Balkhī school. The Balkhī school also included Ibn Hawqal and Al-Maqdisi, whose works show significant overlap with the Ḥudūd al-ʿĀlam, but they appear to have directly copied their content from Istakhri rather than via Ḥudūd al-ʿĀlam. (d) Al-Masudi, The Meadows of Gold. According to Minorsky (1937), as Ḥudūd al-ʿĀlam contains more details about the same topics, the author probably did not directly copy from Masudi's work, but they both drew from a common source 'of which Mas'udī possessed only an abstract. Possibly the same source is responsible for the interesting details on Gīlān.' (e) Some contents about Arabia appear to derive from Hamdani's Geography of the Arabian Peninsula (Arabic: صفة جزيرة العرب, romanized: Sifat Jazirat ul-Arab), perhaps a more complete version of Ibn Khordadbeh's work, or a yet unknown source.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Hudud al-'Alam

Start with the simplest possible case. Write down what Hudud al-'Alam claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hudud al-'Alam before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hudud al-'Alam ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hudud al-'Alam

In research
Hudud al-'Alam appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Hudud al-'Alam in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Hudud al-'Alam is common in secondary-school and first-year university syllabi. It links to neighbouring topics 10th-century Persian books, 10th-century manuscripts, Atlases, so understanding it makes those chapters shorter.
In everyday life
Look for Hudud al-'Alam outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Hudud al-'Alam” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Hudud al-'Alam in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hudud al-'Alam means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Hudud al-'Alam out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hudud al-'Alam in simple terms?

The Ḥudūd al-ʿĀlam (Arabic: حدود العالم, lit. 'Boundaries of the World', 'Limits of the World', or 'The Regions of the World') is a 10th-century geography book written in Persian by an anonymous author from Guzgan (present day northern Afghanistan), possibly Šaʿyā bin Farīghūn. The full title is حد…

Why does Hudud al-'Alam matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hudud al-'Alam?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hudud al-'Alam.

Tags

  • 10th-century Persian books
  • 10th-century manuscripts
  • Atlases

Keep exploring