Al-Kāfi #447“The earth has never been without a person with Divine authority who would teach people about the lawful and unlawful matters and call them...
Al-Kāfi #459“Would there remain only two people on earth, one of them would the person with divine authority over the other.” Muhammad ibn al-Hassan has...
Al-Kāfi #453“ The earth is never without a person with divine authority and I swear to Allah that I am the person with Divine authority.”