According to Mahayana tradition, the Mahayana sutras were transmitted in secret, came from other Buddhas or Bodhisattvas, or were preserved in non-human worlds because human beings at the time could not understand them:
సూత్రం ఇతర బుద్ధుల నుండి లేదా బోధిసత్వల నుండి వచ్చిందని ఏ సంప్రదాయం చెబుతుంది?
Mahayana tradition