How Does Consciousness Hand Over Problems to the Manas for Deliberation?

Let the mind consciousness package and condense a question, then hand it over to the manas. This method works as follows: the mind consciousness transforms the full meaning of the question into a single thought and suspends it in the manas—that is, in the depths of the mind. No matter what you are doing, you must carry this questioning thought in your mind, carrying it deeply, without letting go or abandoning it. If that thought is no longer in the mind—if there is no more doubt, no more deliberation (manasikāra)—the mind consciousness should throw that question to the manas again, reminding Him once more. At the same time, the mind consciousness itself should not engage in excessive or complicated mental activities, so as not to distract the manas's attention. This is exactly how Chan meditation investigates a huatou in the Chan school—the method is the same, and the deepest, most subtle deliberation (manasikāra/manana) is done this way. Many people in worldly affairs have used this method; they simply have not been able to summarize and systematize it for use in the Buddha's teachings.