Four conditions

The Buddha said to Bodhisattva Universal Worthy: "If good men and good women will fulfill four conditions in the time after the Thus Come One has entered extinction, then they will be able to acquire this Lotus Sutra. First, they must be protected and kept in mind by the Buddhas. Second, they must plant the roots of virtue. Third, they must enter the stage where they are sure of reaching enlightenment. Fourth, they must conceive a determination to save all living beings. If good men and good women fulfill these four conditions, then after the Thus Come One has entered extinction they will be certain to acquire this sutra."

The Lotus Sutra - Chapter Twenty-eight