Some early manuscripts address this problem by changing this verse to specify that it is the temple, not the sanctuary where the coins are going, but the earliest sources agree that τον ναον was the term the author of Matthew used. While the author of Matthew would have been aware of the rules surrounding the Temple sanctuary, he may be using the term to emphasize the defilement with the blood money corrupting the holy place and presaging the destruction of the Temple itself.
Some initial texts address this problem by modifying the verse to specify that it is the temple, not the sanctuary where the coins are being sent, but the earliest sources concur that ναον was the term Matthew's author used. The writer of Matthew would have been aware of the regulations surrounding the Temple sanctuary; however, he may be using ναอน to emphasize the contamination caused by the tainted money and its potential connection to the destruction of the Temple.