2 Kings 6:24-25

24But later, King Ben-Hadad of Syria sent his whole army to attack Samaria. His soldiers made their camp all around the city.

25As a result, there was a famine in the city. The Syrian army were all around the city for a long time. Food in the city was very expensive. A donkey's head cost 80 pieces of silver. A small cup of dove's dung cost five pieces of silver.