Leviticus 13:51

He will examine it again on the seventh day. If the mildew has spread, the object is unclean.

Leviticus 14:44

the priest will go and look. If it has spread, the house is unclean.

Treasury of Scripture Knowledge

Summary

And he shall look on the plague on the seventh day: if the plague be spread in the garment, either in the warp, or in the woof, or in a skin, or in any work that is made of skin; the plague is a fretting leprosy; it is unclean.

Fretting leprosy

General references

Bible References

Fretting leprosy

Leviticus 14:44
the priest will go and look. If it has spread, the house is unclean.

General references

Leviticus 14:39
The priest will go back and examine it again on the seventh day. If the mildew in the walls of the house has spread,