The Perceiving Mind Certainly Can Not Be True Mind
The thoughtless and pristine perceiving mind is just the consciousness included in the consciousness skandha. Although this mind is away from the language and words, it still senses suffering and happiness as well as truth and falsity based on its mental functionality, included in the Six Consciousness Skandhas. The perceiving mind certainly can not be true mind which is everlasting and inextinguishable and is away from the suffering and happiness, nor can it stay in the nirvana state devoid of six sense-objects because the six consciousness minds included in the consciousness skandha, regardless of being either thoughtful or thoughtless, stem from the thus-come-store in the matching condition of mind root and mental object.
--The Correct Meanings of “The Agama Sutra”, Vol. 2
-- Pings Xiao, The Correct Meanings of “The Agama Sutras”, Vol. 2, True Wisdom Publisher, Taipei, 2006/11/01