From Charles Mann’s history of the Pre Columbus Americas, 1491:
Carried on a golden litter, Thupa Inka appeared with such majesty that “people left the roads along which he had to pass and, ascending the hills on either side, worshipped and adored him by pulling out their eyebrows and eyelashes.” Minions collected and stored every object he touched, food waste included, to ensure that no lesser persons could profane these objects with their touch. The ground was too dirty to receive the Inka’s saliva, so he always spat into the hands of a courtier. The courtier wiped the spittle with a special cloth and stored it for safekeeping. Once a year everything touched by the Inka — clothing, garbage, bedding, saliva, feces — was ceremonially burned.