The 10 Kislev (Hebrew: י" כסלו) refers to the 10th day of the Jewish month of Kislev.
In the ChabadHasidic community, the 10th of Kislev is celebrated as the liberation of Rabbi Dovber Schneuri, the second Rebbe of Chabad, from Czarist imprisonment.
The date is significant within the ChabadHasidic movement. Rabbi Dovber Schneuri, the second Rebbe of Chabad (also known as the "Mitteler Rebbe" in Yiddish) was accused of being a revolutionary in CzaristRussia.[1] He was arrested on the fictitious charge of sending money to Eretz Yisrael to aid and abet enemies of the Czar.[2]
On this date in 1826 (5587) the Mitteler Rebbe was released from his imprisonment in the City of Vitebsk.
This day is regarded as an important festival of the Chabad movement, and has thus been celebrated ever since by Chabad Hasidim with joyous farbrengens.