Samādhi Is the Manas in Samādhi

Master Kuiji entered meditative concentration (samādhi) for thousands of years in a past life; if the manas were not in concentration, how could he have remained in samādhi for thousands of years? Within this samādhi there are no six consciousnesses — with the six consciousnesses present, one could not remain in samādhi for long. The meditative concentration of the non-Buddhists is also very powerful; they can remain in samādhi for eighty thousand great kalpas, all with the manas in concentration.