The Seven Consciousnesses Should Emulate the Tathāgatagarbha, Not Abiding in the Realm of the Six Sense Objects

Question: "Abiding nowhere, give rise to the mind." If this mind is the tathāgatagarbha, then why did the Buddha say "should"? The true mind, the tathāgatagarbha, is inherently abiding nowhere anyway. Whether or not to abide is not something the mind consciousness can control. Please, Master, give your instruction~ Thank you 

Answer: "Should" — when the eighth consciousness responds to conditions and manifests the myriad dharmas, it abides nowhere. The seven consciousnesses should also, in this way, face the six sense objects and face all states of experience abiding nowhere. This is the meaning of "should."