Timeline of classical Arabic works

[Wakas]

Famous classical Arabic dictionaries, grammar works and lexicons a timeline

The following are approximate dates (CE = common era)

610-632 CE revelation of Quran
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760 kitab al ayn - khalil ibn ahmad (no extant copy from the time however)
790 al Kitab by Sibawayh (oldest extant Arabic grammar work?)
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830 beginning of compilation of Hadith works
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900 Kitab al Dajmharah
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930 six most famous Traditional Hadith book collections complete
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1003 Al Sihah
1004 Makayis al Lughah
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1050 Muhkam by ibn Sidah
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1290 Lisan al arab (most famous dictionary, based on earlier works) 650+ years after Quran
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1400 al qamus al muhit
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1780 Taj al arus
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1850 Lane's Lexicon

Important points to note

Most (perhaps all) of the above authors, especially the earliest, considered how The Quran used its words to be the most pure (i.e. correct) and often cited its examples of usage. Those who are Quran minded still aim to do this today.

Arabic is a living language, meaning it is used by people. All languages used by people evolve with time, e.g. certain words die out, new words introduced, word meanings are modified. Some authors, such as Toshihiko Izutsu, discuss how the usage of words became nuanced/modified even during the Quran's revelation. This is nothing unusual and even happens today with English.

All man-made sources are inherently imperfect, including dictionaries/lexicons/grammar works. They will inevitably contain errors, bias, contradict each other, be incomplete etc. They are still an excellent resource to use however, as long as one bears in mind The Quran's criterion.

Thought some might find the above useful.

References
Wikipedia
Toshihiku Izutsu works
The Arabic Language its role in history
Rethinking Tradition in Modern Islamic Thought