Nichiren Daishonin states in “On the Heritage of the Ultimate Law of Life and Death”:

All disciples and believers of Nichiren should chant Nam-Myoho-Renge-Kyo with the spirit of many in body, one in mind, overcoming all differences among themselves, [to become united with the heart of the Buddha], just like fish being inseparable from the water in which they swim. This is called the heritage of the ultimate Law of life and death. This is also what Nichiren is trying to propagate now in the Latter Day of the Law. When you are so united, even the great aspiration for kosen-rufu can be fulfilled without fail. However, if there are any among Nichiren’s disciples who are many in body, many in mind, they are like subjects in a castle who destroy the fortress from within.

宗祖日莲大圣人于《生死一大事血脉抄》曰:

总之，日莲之弟子檀那等，无自他彼此之心，成水鱼之思，异体同心奉唱南无妙法莲华经，云生死一大事之血脉也。然今日莲所弘通之究竟，此也。若然，广宣流布之大愿亦可成欤。反之，日莲之弟子中若有异体异心者，例如城中之人破其城。

Download Gosho Passage – December 2019 / 下载 2019 年 12 月 御书文段