Leviticus 23:8

And offer ye a sacrifice to Jehovah seven days: in the seventh day a holy calling; any work of labor ye shall not do.

Treasury of Scripture Knowledge

Summary

But ye shall offer an offering made by fire unto the LORD seven days: in the seventh day is an holy convocation: ye shall do no servile work therein.

Bible References

General references

Exodus 13:6
Seven days shalt thou eat unleavened, and in the seventh day a festival to Jehovah.
Leviticus 23:35
In the first day a holy calling: any work of labor ye shall not do.
Numbers 28:16
And in the first month, in the fourteenth day to the month, a passover to Jehovah.