Supreme Leader Ayatollah Ali Khamenei's warning came as Iran summoned Riyadh's envoy for the fourth time since last Thursday's deadly crush of pilgrims to protest what it called the kingdom's "mishandling" of the incident.
Saudi authorities say 769 pilgrims died in the stampede near Mecca in the worst disaster to strike the annual pilgrimage in a quarter-century. Iran appears to have lost the largest number of pilgrims, with 239 dead.
