In order to make himself appear more important, a miller/commoner lied to the king that his daughter could spin straw into gold.

A miller boasts to a King that his daughter can spin straw into gold.

No, he was the guy who spun straw into gold.

Like Rapunzel spinning straw into gold, she crochets three hats a day.

Sylvans don't go around spinning straw into gold, for goodness' sake!

In order to make himself appear more important, a miller lies to a king, telling him that his daughter can spin straw into gold.

She was beginning to spin autobiographical straw into musical gold.

A poor miller tells the king that his daughter can spin straw into gold.

She hadn't the least idea of how to spin straw into gold, and became at last so miserable that she began to cry.

The miller's daughter is valued as a potential wife because of her reputation for being able to spin straw into gold.