宗鏡錄 63.29

63.29

又唯識論云。問曰。如汝向言。唯有內識。無外境界。若爾。內識為可取。為不可取。若可取者。同色香等外諸境界。若不可取者。則是無法。云何說言唯有內識。無外境界。

Furthermore, the Vijñaptimātratāsiddhiśāstra states:
'Question: As you said before, there is only internal consciousness and no external objects. If so, is internal consciousness grāhya (apprehended) or is it not grāhya? If it is grāhya, it is identical to external objects such as form and fragrance. If it is not grāhya, then it is a non-existent dharma. How then can you say that there is only internal consciousness and no external objects?'