KJV:
And it came to pass, as they departed from him, Peter said unto Jesus, Master, it is good for us to be here: and let us make three tabernacles; one for thee, and one for Moses, and one for Elias: not knowing what he said.
NASB:
And as these were leaving Him, Peter said to Jesus, "Master, it is good for us to be here; let us make three tabernacles: one for You, and one for Moses, and one for Elijah "-- not realizing what he was saying.