What was the history behind the phrase "Breakfast In Baghdad, Lunch In Bombay, Dinner In Delhi"?

I've been trying to look up the origins of where this phrase originated & who said it. This phrase was supposedly said by either Tamerlane or Genghis Khan that his armies covered so much ground in a day that they'd travel from "Baghdad, India, Beijing". Anyone know the details behind it?<br><br>Edit: Not entirely sure where the other comments are coming from, I wanna know the actual origins behind this phrase.