Who said "The real power is in friendship, not-a the mushrooms."?

This quote is attributed to Luigi.

The real power is in friendship, not-a the mushrooms. - Luigi

"The real power is in friendship, not-a the mushrooms."

Luigi Friendship

"It's-a me, Luigi!"

"Mamma mia!"

"Let's-a-go!"

"I'm-a scared, but I'm-a going anyway!"

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."