Ezra 4:21

Give ye now commandment to cause these men to cease, and that this city be not builded, until another commandment shall be given from me.

Cross-reference

Ezra 4:19 provides the finding of rebellion that justifies the king's command here to stop the building.

Ezra 6:8 shows Darius later reversing the stop order by decreeing financial support for the temple — a direct contrast to this prohibition.