His story got the boys excited and they pumped him dry.

They found out where his tribe lived, how to get there, and all that.
"Queza told them that the diamonds wouldn't be hard to get, that there were altar idols and ornaments in a big cave which was hollowed out of the face of a rock cliff, and that there was a bridge over to it, and that the cave wasn't guarded because the tribe had a superstitious fear of the priests who had charge of the idols and things, and that the people didn't care for gold and diamonds, anyway, because they were so common.
"The boys had got all this out of Queza about a month before I sold out and joined them, and they'd rustled some money somewhere, and had everything fixed up to go to Yucatan to bring home some of that gold and diamonds.

They wanted me to go along.

I was in that frame of mind in which I didn't care much about what happened to me, and they didn't have to argue long.

We dropped down the Rio Grande to a little place on the Gulf coast near where Brownsville is now.