Exodus 16:5
On the sixth day, when they prepare what they bring in, it will be twice as much as they gather on other days.”
Exodus 16:22-23
On the sixth day they gathered twice as much food, four quarts
Exodus 35:2-3
For six days work is to be done, but on the seventh day you are to have a holy day, a Sabbath
Leviticus 25:21-22
I will appoint My blessing for you in the sixth year, so that it will produce a crop sufficient for three years.