In the original story, Maudgalyāyana cannot assist his mother with his own magical powers; he can only do so by the power of the dharma. The fact that she is saved when he offers a meal to the monastic assembly reflects the widely held idea that the transfer of merit to the deceased is most efficacious when ritually mediated by monastics, especially those earnest in practice and pure in their vows. … Nichiren presents an alternative explanation, showing how he adapted traditional Buddhist stories to his Lotus exclusivism:

The Urabon service began with the Venerable Maudgalyāyana’s attempts to save his mother, Shōdai-nyo, who on account of her miserliness and greed had fallen for five hundred lifetimes into the realm of hungry ghosts. But he could not make her become a buddha. The reason was because he himself did not yet practice the Lotus Sūtra, and so he could not lead even his own mother to buddhahood. But at the eight-year assembly on Vulture Peak, he embraced the Lotus Sūtra, chanted Namu Myōhō-renge-kyō, and became the Buddha Tamālapattracandanagandha [Tamālapattra Sandalwood Fragrance]. At that time, his mother became a Buddha too.

You also asked about offerings for hungry ghosts. The third fascile of the Lotus Sūtra says, ‘It is as though someone coming from a country suffering from famine were suddenly to find a great king’s feast spread before him.’ … When you make offerings for hungry ghosts, you should recite this passage from the sūtra and also chant Namu Myōhō-renge-kyō.

Claims that one person’s religious attainment would simultaneously benefit that individual’s family members, sometimes for seven generations in each direction, was common in Nichiren’s time. They express a confidence, grounded in Mahāyāna notions of interconnection, that one’s own practice affects others across time, space, and the boundaries of life and death. Nichiren here assimilates such ideas to the practice of chanting the daimoku, the title of the Lotus Sūtra.

According to Zhiyi’s parsing, Chapters Two through Nine of the Lotus Sūtra comprise the main exposition of the “trace teaching,” or shakumon, the first fourteen chapters of the Lotus Sūtra. These chapters assert that followers of the two “Hinayāna” vehicles can achieve buddhahood. For the sūtra’s compilers, this message subsumed the entire Buddhist mainstream within its own teaching of the one buddha vehicle and extended the promise of buddhahood to a category of persons — śrāvakas and pratyekabuddhas — who had been excluded from that possibility in other Mahāyāna sūtras. In Nichiren’s day, however, the idea of the one vehicle, that buddhahood is in principle open to all, represented the mainstream interpretive position, and his own reading therefore has a somewhat different emphasis. For Nichiren, the sūtra’s assertion that even persons of the two vehicles can become buddhas pointed to the mutual possession of the ten realms and the three thousand realms in a single thought-moment, without which any talk of buddhahood for anyone, even those following the bodhisattva path, can be no more than an abstraction. The revelation of this universal ground, he said, especially in the “Skillful Means” chapter, constitutes the heart of the shakumon portion of the Lotus. Nonetheless, he regarded Chapter Two through Chapter Nine, the main exposition section, as having been preached primarily for the benefit of persons during the Buddha’s lifetime. The remaining chapters, Chapter Ten through Chapter Fourteen, which constituted the remainder of the trace teaching, he saw as explicitly directed toward those who embrace the Lotus after the Buddha’s passing, and therefore, as having great relevance for himself and his followers.

A third message that Nichiren drew from the story of the buddha Mahābhijfiājfiānābhibhū [Great-Universal-Wisdom-Excellence Tathāgata] and his sixteen sons was the importance of perseverance in practice. In the “Parable” chapter, Śākyamuni tells Śāriputra that he had once followed the bodhisattva path in prior lifetimes but had since forgotten it. What had caused Śāriputra, this wisest of all śrāvakas, to “forget” and abandon the bodhisattva way? The Lotus Sūtra does not tell us, but a story in the Treatise on the Great Perfection of Wisdom (Dazhi du lun) and other sources fills in the gap. It explains that in the past, Śāriputra had already practiced bodhisattva austerities for sixty eons and was cultivating the virtue of giving or generosity, the first of the pāramitās or perfections that a bodhisattva must master on the path to buddhahood. At that point, a certain beggar (in alternate versions, a brahman) asked for one of his eyes. When Śāriputra replied that his eye could not possibly benefit anyone else, the beggar rebuked him, saying that so long as Śāriputra was committed to mastering the practice of generosity, he could not refuse to give what was requested of him. Śāriputra accordingly plucked out an eye and offered it. The beggar sniffed it, flung it to the ground, and stepped on it. Disgusted, Śāriputra concluded that such people were hopeless. At that point, he abandoned the bodhisattva’s commitment to saving others and retreated to the śrāvaka’s pursuit of personal nirvāṇa. In Nichiren’s reading, Śāriputra, deceived by evil influences, had abandoned the Lotus Sūtra for provisional teachings and, as a result, had fallen into the Avici hell, languishing there for vast numbers of eons. Not until he re-encountered Śākyamuni Buddha in the present world was he again able to hear the Lotus Sūtra, regain the bodhisattva path, and receive a prediction of future buddhahood.

In terms of practice, the account of Śākyamuni Buddha’s instruction as unfolding over many lifetimes in the “Apparitional City” chapter assumes a double significance in Nichiren’s thought. On the one hand, this account teaches the need to maintain one’s own practice of the Lotus Sūtra, no matter what hardships or discouragement one might encounter. At the same time, it suggests that teaching the daimoku to others, even if they initially mock or malign it, is always a fruitful effort, establishing for them a karmic connection with the Lotus Sūtra and thus ensuring that they will one day achieve buddhahood.

Nichiren drew from the Mahābhijfiājfiānābhibhū [Great-Universal-Wisdom-Excellence Tathāgata] story an understanding of how the Buddha’s pedagogical method unfolds over time. Zhiyi had identified three standards of comparison by which the Lotus Sūtra could be said to surpass all others. The first, based on Śākyamuni’s declaration of the one buddha vehicle in the “Skillful Means” and subsequent chapters, is that it encompasses persons of all capacities. The second, based on the present, “Apparitional City” chapter, is that it reveals the process of the Buddha’s instruction from beginning to end. Drawing on the Mahābhijfiājfiānābhibhū narrative, Zhiyi described this process with the metaphor of “sowing, maturing, and harvesting.” That is, the Buddha implants the seed of buddhahood in the mind of his disciples with an initial teaching; cultivates it through subsequent teachings, enabling their capacity to mature; and finally reaps the harvest by bringing those disciples to full enlightenment. As the opening passage of this chapter describes, the buddha Mahābhijfiājfiānābhibhū lived an immensely long time ago, so long that one could measure it only by grinding a vast number of world systems to dust and using each dust speck to represent one eon. In that distant time, Mahābhijfiājfiānābhibhū and his sixteen sons planted the seed of buddhahood in the minds of their auditors by preaching the Lotus Sūtra. Those who heard the Lotus Sūtra from the sixteenth son were born together with him in lifetime after lifetime, as he nurtured their capacity, bringing it to maturity with subsequent teachings over the course of innumerable lifetimes. When that son preached the Lotus Sūtra in the Sahā world as Śākyamuni Buddha, some were at last able to reap the harvest of enlightenment, while others would do so in the future. In other words, Śākyamuni’s resolve to lead all beings to the one vehicle was not merely a matter of this lifetime, but a project initiated in the inconceivably remote past. Indeed, this chapter offers another early hint that Śākyamuni’s buddhahood encompasses a time frame far exceeding the present lifetime, a theme that the Lotus Sūtra develops in later chapters.