Kapparot (Hebrew: כפרות, Ashkenazi transliteration: Kapporois, Kapores) is a customary atonement ritual practiced by some Orthodox Jews on the eve of Yom Kippur.
On the afternoon before Yom Kippur, one prepares an item to be donated to the poor for consumption at the pre-Yom Kippur meal,[4] recites the two biblical passages of Psalms 107:17–20 and Job 33:23–24, and then swings the prepared charitable donation over one's head three times while reciting a short prayer three times.
After the kapparot ritual is concluded, the rooster is treated as a normal kosher poultry product, i.e., it is slaughtered according to the laws of shechita.
The Mishnah Berurah agrees with Rabbi Isserles, solidifying support for the practice among Lithuanian Jews as well.
[4] In the late 19th-century work Kaf Hachaim, Yaakov Chaim Sofer approves of the custom for Sephardi Jews as well.
Some Jews also oppose the use of chickens for kapparot on the grounds of tza'ar ba'alei chayim, the principle banning cruelty to animals.
[11] Jacob Kalish, an Orthodox Jewish man from Williamsburg, Brooklyn, was charged with animal cruelty for the drowning deaths of 35 of these kapparot chickens.