And he mourned for Joseph one year, and did not cease, for he said "Let me go down to the grave mourning for my son."
For this reason it is ordained for the children of Israel that they should afflict themselves on the tenth of the seventh month--on the day that the news which made him weep for Joseph came to Jacob his father
--that they should make atonement for themselves thereon with a young goat on the tenth of the seventh month, once a year, for their sins; for they had grieved the affection of their father regarding Joseph his son.