קבלה אויף ויקרא 1:11

Now, because HaShem-יהו״ה, blessed is He, was compassionate to the children of Israel, He gave us His Torah and mitzvot, and commanded that we bring sacrificial offerings (Korbanot) before Him to atone for our sins, and silence the prosecutors and all the forces of destruction to the north-Tzafon-צפון. He thus commanded that every sacrificial offering (Korban) brought in atonement for sin, must be slaughtered in the north-Tzafon-צפון, as the verse states,¹⁴⁴Leviticus 1:11 “He shall slaughter it at the northern side-Tzafonah-צפונה of the Altar.” Sacrificial offerings (Korbanot) slaughtered in the north-Tzafon-צפון are brought for sins transgressed by man, whether the sins of an individual or the sins of the congregation. For example, the bullock and he-goat offerings of Yom Kippur and the bullocks and he-goats that were to be burned, and the communal peace-offerings and guilt offerings, and the sin offerings of the congregation and of the individual, are all slaughtered in the north-Tzafon-צפון.¹⁴⁵Mishnah Zevachim 5:1-5