- Khan: What do we owe?
- The Doctor: Oh, thirty-five elephants with ceremonial bridles, trappings, brocades and pavillions, four thousand white stallions and twenty-five tigers.
- Khan: That's not too bad so far.
- The Doctor: And the sacred tooth of Buddha which Polo brought over from India.
- Khan: Oh... that?What else, what more?
- The Doctor: I... I'm very much afraid all the commerce from Burma for one year, sire.