Belloq gave Tuco a hard stare. He double-crossed Niko for this treasure, so he all too easily imagine Tuco double-crossing him for it.

"I am not. But it would be most unwise to steal from the Orion Syndicate, especially when the planet is under quarantine and difficult to escape. Jabba is known for his tenacity and his inventively cruel vindictiveness against people who steal from him."