Leviticus 23:7

23:7 On the first day there will be a holy assembly for you; you must not do any regular work.

Leviticus 23:35

23:35 On the first day is a holy assembly; you must do no regular work.

Leviticus 25:39

25:39 “‘If your brother becomes impoverished with regard to you so that he sells himself to you, you must not subject him to slave service.