Exodus 23:10

You shall sow your land for six years and gather in its yield,

Leviticus 25:3-4

Six years you shall sow your field, and six years you shall prune your vineyard and gather in its crop,

Treasury of Scripture Knowledge

Summary

And six years thou shalt sow thy land, and shalt gather in the fruits thereof:

General references

Bible References

General references

Leviticus 25:4
but during the seventh year the land shall have a sabbath rest, a sabbath to the Lord; you shall not sow your field nor prune your vineyard.
Deuteronomy 15:1
At the end of every seven years you shall grant a remission of debts.