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Case file

Kharaj

Wikipedia's first sentence called it “tax on land”. Today it says “synonymous with jizyah and denoted a lump-sum duty levied upon the lands of conquered provinces”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the 2005 one. Red dashes: removed from Wikipedia since. Pale dots: rewritten; the numbered note shows what it says now. 1 tap a number or a side note to jump between them
The opening as it read in 2005

In Islamic law , kharaj is a tax on land , specifically agricultural land.1 The theory and application of the tax have varied over the years: in the earliest applications it was synonymous with jizyah (the poll tax paid by dhimmi ), while from the Umayyad Caliphate onwards it was levied on certain classes of land without regard for the cultivator's religion. It was always distinct from the tithes required of Muslims , and unlike jizyah and zakat had no basis in the Qur'an or hadith , being rather the product of ijma and al-urf . A need for steady tax revenue increased with the expansion of the Islamic empire over the Middle East . The zakat and ushr (a tax on Muslim property) were no longer adequate sources of income for a state in which the Muslims were, at first, a minority. The jizyah filled part of the need; the kharaj , based on the established tax systems of the Byzantine and Sassanid empires, fulfilled the rest. Under the first Caliphs the two were not distinct; both were collected as a lump sum via the existing infrastructure.2 This collection of ad hoc arrangements soon proved inadequate as well; a new and unified system was developed beginning under Umar II , which would be finalized under the Abbasids and would thereafter form the model of tax systems in the Islamic state.3 Ibn Warraq has described kharaj as discriminatory and oppressive in his book Why I am not a Muslim.4

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 17509012.
Today
Wikipedia's first sentence called it “tax on land”. Today it says “synonymous with jizyah and denoted a lump-sum duty levied upon the lands of conquered provinces”. Read the current article and compare.
2005201020152020Oct '232025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.

What Wikipedia says this is

Every article opens by defining its subject. This one was redefined since 2005, and today's defining sentence is their current revision.

Then

tax on land

Now

synonymous with jizyah and denoted a lump-sum duty levied upon the lands of conquered provinces

Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.

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