850 AD-Masoretic Text

The Masoretic^[1] Text (MT, 𝕸, or ${\displaystyle {\mathfrak {M}}}$) is the authoritative Hebrew and Aramaic text of the Tanakh for Rabbinic Judaism. It was primarily copied, edited and distributed by a group of Jews known as the Masoretesbetween the 7th and 10th centuries CE. The oldest extant manuscripts date from around the 9th century.^[2] The Aleppo Codex (once the oldest-known complete copy but now missing the Torah) dates from the 10th century. The Masoretic Text defines the Jewish canon and their precise letter-text, with their vocalization and accentuation known as the Masorah.

https://en.wikipedia.org/wiki/Masoretic_Text