Commentators have often interpreted the jewel in the garment as the “buddha nature.” The Lotus Sūtra does not contain the precise term “buddha nature” (Ch. foxing; J. busshō), perhaps because it had not yet come into use in Indian Buddhism. However, the Lotus clearly recognizes the buddha potential in all beings, and Chinese exegetes argued that the concept is there, if not the term itself. The expression “buddha nature” was well known in medieval Japan, and Nichiren uses it occasionally, but he appears to have preferred “buddha realm” (among the ten realms) or “seed of buddhahood” (J. busshu). His use of the latter term is quite different from the Hossō idea of untainted seeds in the storehouse consciousness. … “Buddha nature” and “seed of buddhahood” are similar in that both indicate the potential for buddhahood, supreme enlightenment, but where “nature” is constant and unchanging, “seeds” can lie dormant, even rot, or germinate and grow in response to conditions; as the Lotus Sūtra says, “The buddha-seeds germinate through dependent origination.” Thus, Nichiren may have used the term “seed of buddhahood” because he wished to portray buddhahood, not as an abstract potential, but as manifested through specific causes and conditions, that is, by embracing a specific form of practice. In that regard, he sometimes borrows Zhiyi’s concept of the “buddha nature as three causes”: (1) the innate potential for buddhahood; (2) the wisdom that illuminates it; and (3) the practice that manifests that wisdom. For Nichiren, that practice was chanting Namu Myōhō-renge-kyō, the act that manifests the jewel of the buddha realm hidden within the nine realms of ordinary people. Sometimes he refers to the daimoku itself as the “seed of buddhahood.”