Ezekiel 44:26

And after his cleansing they shall number to him seven days.

Numbers 6:10-21

And in the eighth day he shall bring two turtle-doves, or two sons of the dove to the priest, to the door of the tent of appointment:

Numbers 19:11-14

He touching upon the dead of any soul of man and he was unclean seven days.

Hebrews 9:13-14

For if the blood of bulls and he-goats, and the ashes of a heifer besprinkling the polluted, consecrates to the purity of the flesh:

Treasury of Scripture Knowledge

Summary

And after he is cleansed, they shall reckon unto him seven days.

Bible References

General references

Numbers 6:10
And in the eighth day he shall bring two turtle-doves, or two sons of the dove to the priest, to the door of the tent of appointment:
Numbers 19:11
He touching upon the dead of any soul of man and he was unclean seven days.
Hebrews 9:13
For if the blood of bulls and he-goats, and the ashes of a heifer besprinkling the polluted, consecrates to the purity of the flesh: