成唯識論演祕 7.363

7.363

答：若有曾於色、無色界所有諸法，善聞、善思、善取相者，即能了別。若不爾者，不能了別。

Answer: If one has previously listened well, reflected well, and apprehended the characteristics well regarding all dharmas of the form and formless realms, then one can discern them. If not, one cannot discern them.