Nachon's. Same as Chidon (1 Chronicles 13:9).
his hand. These words are contained in the Aramaean, Septuagint, Syriac, and Vulgate.
Related Commentaries of 2 Samuel 6:6
2 Samuel 6:6
6 And when they came to Nachon's threshingfloor, Uzzah put forth his hand to the ark of God, and took hold of it; for the oxen shook it.