In The Outsiders, why does Two-Bit tell that Tim Shepard is looking for Dally?

Shepard is looking to fight with Dally, and Two-Bit wants to make sure that Dally doesn't have a knife. He wants to make sure the fight is fair.

He'll probably find the fight," Two-Bit stated cheerfully. "That's why I came over. Mr. Timothy Shepard and Co. are looking for whoever so kindly slashed their car's
tires, and since Mr. Curly Shepard spotted Dallas doing it... well... Does Dally have a
blade?"

"Not that I know of," I said. "I think he's got a piece of pipe, but he busted his blade this morning."

"Good. Tim'll fight fair if Dally don't pull a blade on him. Dally shouldn't have any trouble."