I think the rumor was that he would pay for their fees. I don't know that he actually said it though.
As for going to the Capitol building, here's the transcript of his speech. Draw you're own conclusions:
"Now, it is up to Congress to confront this egregious assault on our democracy. And after this, we’re going to walk down, and I’ll be there with you, we’re going to walk down, we’re going to walk down.
Anyone you want, but I think right here, we’re going to walk down to the Capitol, and we’re going to cheer on our brave senators and congressmen and women, and we’re probably not going to be cheering so much for some of them.
Because you’ll never take back our country with weakness. You have to show strength and you have to be strong. We have come to demand that Congress do the right thing and only count the electors who have been lawfully slated, lawfully slated.
I know that everyone here will soon be marching over to the Capitol building to peacefully and patriotically make your voices heard."