妙法蓮華經玄義 8.98

8.98

第四句名義異而體同者，如妙有等，名名不同，真善色等，義義有異，而同歸一體，更無二趣，故言名義異而體同。三門亦如是。

As for the fourth proposition, 'name and meaning are different, but substance is the same': for example, 'wondrous existence' and so on have each name different, and 'true good form' and so on have each meaning different, yet they all return to a single substance without any second direction; hence it is said that 'name and meaning are different, but substance is the same.' The [other] three gates are also like this.