I learned the song about forty years ago from a borrowed record, but I can't remember which record or who sang it. I thought was the Kossoy sisters, but have since run across a copy of their record, and it isn't on it (!??). But I remember the line distinctly. It was

Your cage shall be of purest gold, no need for poverty.

It was clear and distinct, and there was no mistaking it. It also fit well with the almost naive style of the rest of the lyrics. At least, this was the line in the version that I learned.

Don Firth