A.T. Robertson Commentary Matthew 27:9

"Then was fulfilled that which was spoken through Jeremiah the prophet, saying, And they took the thirty pieces of silver, the price of him that was priced, whom [certain] of the children of Israel did price;" — Matthew 27:9 (ASV)

By Jeremiah the prophet (δια Ιερεμιου). This quotation comes mainly from Zec 11:13 though not in exact language. In Jer 18:18 the prophet tells of a visit to a potter's house and in Jer 32:6ff. of the purchase of a field. It is in Zechariah that the thirty pieces of silver are mentioned. Many theories are offered for the combination of Zechariah and Jeremiah and attributing it all to Jeremiah as in Mr 1:2f. the quotation from Isaiah and Malachi is referred wholly to Isaiah as the more prominent of the two. Broadus and McNeile give a full discussion of the various theories from a mere mechanical slip to the one just given above. Matthew has here (27:10) "the field of the potter" (εις τον αγρον του κεραμεως) for "the potter the house of the Lord" in Zec 11:13. That makes it more parallel with the language of Mt 27:7.