仁王護國般若波羅蜜多經 1.66

1.66

佛言：「大王！文字者，謂契經、應頌、記別、諷誦、自說、緣起、譬喻、本事、本生、方廣、希有、論議，所有宣說音聲，語言，文字，章句，一切皆如，無非實相；若取文字相者，即非實相。

The Buddha said: "Great King! Written words refer to sūtras, geyas, vyākaraṇas, gāthās, udānas, nidānas, avadānas, itivṛttakas, jātakas, vaipulyas, adbhutadharmas, and upadeśas; all spoken sounds, language, written words, phrases, and sentences are all suchness, and none are not dharmatā. If one grasps at the characteristics of written words, then that is not dharmatā.