Although Śubh̄karasimha was such a splendid person, he once experienced a sudden death. Upon regaining consciousness, however, he is said to have declared:

Upon my death, a hell guard came to tie me with seven iron ropes, hit me hard with an iron stick, and dragged me to the palace of King Yama. Somehow I completely forgot all Buddhist scriptures said to be 80,000 in number, not remembering even one word or a phrase except the title of the Lotus Sūtra. When I recalled it, the iron ropes that tied me got loose somewhat. Breathing a sigh of relief, I recited a passage in the “Expedients” chapter of the Lotus Sūtra resoundingly: “This triple world is all My domain, in which all the living beings are my children without exception. Although there exist many sufferings and difficulties in this world, only I, the Buddha, alone can save and protect all living beings.” Then the seven iron ropes were broken into pieces and scattered all over. Seeing this scene, King Yama took off his crown, came down to the courtyard, and said to me, “This experience of death has not exhausted your entire life span.” Thus he sent me back to this world.

Zemmui-shō, Treatise on Śubh̄karasimha, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 50

For me, what’s fascinating about this is not that reciting verses from the Lotus Sūtra can break the steel ropes of hell, but that this event occurred to one of the three patriarchs of the Chinese Chen-yen (Shingon) School.

As Nichiren writes later in this letter:

Shingon Buddhism claims that one ritual sign with the fingers and one mantra word uttered by the mouth will extinguish the immeasurable sins committed in the past and present. Nevertheless, for what sin was this master tortured by King Yama? This is indeed inexplicable. If Tripitaka Master Śubh̄karasimha with his mastery of Shingon Buddhism cannot escape the torture of King Yama, how can Shingon masters of India, China and Japan escape from the sufferings of hell?

Such are the perils of slandering the Lotus Sūtra.