Exodus 20:25
If you make an altar of stone for Me,
Deuteronomy 27:5-6
Moreover, you shall build there an altar to the Lord your God, an altar of stones; you
Joshua 8:31
just as Moses the servant of the Lord had commanded the sons of Israel, as it is written in the book of the law of Moses,
Treasury of Scripture Knowledge
Summary
And if thou wilt make me an altar of stone, thou shalt not build it of hewn stone: for if thou lift up thy tool upon it, thou hast polluted it.
General references
Bible References
And
Deuteronomy 27:5
Moreover, you shall build there an altar to the Lord your God, an altar of stones; you shall not wield an iron tool on them.
Joshua 8:31
just as Moses the servant of the Lord had commanded the sons of Israel, as it is written in the book of the law of Moses, an altar of uncut stones on which no man had wielded an iron tool; and they offered burnt offerings on it to the Lord, and sacrificed peace offerings.
General references
Leviticus 16:33
and make atonement for the holy sanctuary, and he shall make atonement for the tent of meeting and for the altar. He shall also make atonement for the priests and for all the people of the assembly.