You boys both fought in Philadelphia before, and you know the rules.

3 seconds sound clip from the Rocky (1976) movie soundboard.

You can hear this line at 01:46:34.243 in the Blu-ray version of the movie.

Quote context

[...]

- The fight is on the way. Settle down because it won't be long now.

- And now... for the main event.

- The challenger, white trunks, weighing 190 pounds, Philadelphia's favorite son, The Italian Stallion, Rocky Balboa.

- And on my right, wearing red, white and blue, weighing 210 pounds, undefeated in 46 fights, the master of disaster, the undisputed, heavyweight champion of the world Apollo Creed.

- You, chump. I want you!

- You boys both fought in Philadelphia before, and you know the rules.

- No low blows, watch your heads, no butting. Shake hands now and come out fightin'.

- Put your hands up there, chump.

- Come out fightin'.

- Come on. Come on.

- Rocky's takin' it carefully. He's just going over and being calm, it looks like from here.

- There goes the big hat.

[...]