Jamieson, Fausset and Brown on Ezra 4:13

13. toll, tribute, and custom--The first was a poll tax; the second was a property tax; the third the excise dues on articles of trade and merchandise. Their letter, and the edict that followed, commanding an immediate cessation of the work at the city walls, form the exclusive subject of narrative at Ezr 4:7-23. And now from this digression [the historian] returns at Ezr 4:24 to resume the thread of his narrative concerning the building of the temple.