Who said "You'll have to prove yourself worthy."?

This quote is attributed to Ursula.

You'll have to prove yourself worthy. - Ursula

"You'll have to prove yourself worthy."

Ursula

"I'm not asking much. Just your voice."

"The poor unfortunate souls who have no one else to turn to."

"I admit that in the past I've been, nasty. They weren't kidding when they called me, well, a witch."

"But people are more than just their looks."