2 Kings 7:18

And it came to pass as the man of God had spoken to the king, saying, Two measures of barley for a shekel, and a measure of fine flour for a shekel, shall be to morrow about this time in the gate of Samaria:

Cross-reference

2 Kings 7:1 contains the exact prophecy quoted here — about the sale of fine flour and barley in the gate.

2 Kings 7:2 records the officer's doubt of this same prophecy — his 'windows of heaven' question and the penalty.