It is narrated from Hazrat Hisham bin Urwah that his father, Hazrat Urwah, used to slaughter his camels while they were standing.

Imam Malik, may Allah have mercy on him, said that it is not permissible for anyone to shave his head before the sacrifice of the Hady, nor is it permissible to perform the sacrifice before the dawn of the Day of Sacrifice. Rather, the sacrifice, changing of clothes, removal of dirt, and shaving of the head—all these actions should be done on the tenth day; before that, they are not permissible.