I was listening to Dan Carlin's podcast. In Death throes of the Republic he mentions that Lucius Cornelius Sulla mocked the youth of Marius the younger, having been presented with his severed head, by saying "First you learn to pull an ore, then you may take the helm".

I really liked this and decided to do a google search of that phrase, but I found no hits. It's not on the internet. So I'm wondering, Who recorded it? is this accurate?