法華經義記 1.34

1.34

今言「如是」者，此是通序之第一也。有人解言：「文則稱如，理則稱是。」又有人言：「如明無異，是辨無非也。」今一家所習，言如是兩字更無別意，正為總舉一部經為我聞作詮敘，言如是一部經，我佛邊聞也。

Now, regarding the words "Thus": this is the first of the general preface. Someone explained: "The text is termed 'thus' (ru), and the principle is termed 'correct' (shi)." Another said: "'Thus' (ru) clarifies that there is no difference; 'correct' (shi) discerns that there is no error." Now, what our own school practices is to say that the two words "Thus" (rushi) have no other distinct meaning; they merely serve to encompass the entire scripture collectively as a prefatory record for "have I heard", meaning that such a scripture as this, I heard from the Buddha's side.