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Case file

Toch k'dei dibur

Wikipedia's first sentence called it “principle in jewish law that governs the immediacy with which one must speak words for them to be considered a”. Today it says “equivalent to the time necessary to say the words shalom alecha rebbi”.
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 2020 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 2020

The immediacy with which one must speak words for them to be considered a continuation of what has been stated just prior The Hebrew phrase tokh k'dei dibur (תוך כדי דיבור, "within [time] sufficient for speech") is a principle in Jewish law that governs the immediacy with which one must speak words for them to be considered a continuation of what has been stated just prior. The period of toch k'dei dibur is equivalent to the time necessary to say the words Shalom alecha rebbi (שלום עליך רבי, "Peace unto you, my teacher"), which is somewhat less than three seconds. Mishnah Brurah 206:12, although the Taz adds the word u'mori (ומורי, "and my master"), which would lengthen the permitted window of opportunity.

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 962613982.
Today
Wikipedia's first sentence called it “principle in jewish law that governs the immediacy with which one must speak words for them to be considered a”. Today it says “equivalent to the time necessary to say the words shalom alecha rebbi”. Read the current article and compare.
201020152020Oct '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 2010, and today's defining sentence is their current revision.

Then

principle in jewish law that governs the immediacy with which one must speak words for them to be considered a

Now

equivalent to the time necessary to say the words shalom alecha rebbi

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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