Exodus 20:25
And if thou shalt make to me an altar of stones, thou shalt not build them, cutting, for didst thou lift up thy sword upon it, and thou shalt defile it.
Deuteronomy 27:5-6
And build there an altar to Jehovah thy God, an altar of stones: thou shalt not lift up iron upon them.
Joshua 8:31
As Moses the servant of Jehovah commanded the sons of Israel, as it was written in the book of the law of Moses, an altar of stones complete; which iron was not lifted up upon them: and they will bring up upon it burnt-offerings to Jehovah, and will sacrifice peace.
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
And build there an altar to Jehovah thy God, an altar of stones: thou shalt not lift up iron upon them.
Joshua 8:31
As Moses the servant of Jehovah commanded the sons of Israel, as it was written in the book of the law of Moses, an altar of stones complete; which iron was not lifted up upon them: and they will bring up upon it burnt-offerings to Jehovah, and will sacrifice peace.
General references
Leviticus 16:33
And he expiated the holy of holy, and the tent of appointment, and the altar shall he expiate: and for the priests, and for all the people of the convocation, shall he expiate.