成唯識論述記 7.493

7.493

述曰：第二量云：餘識亦不親緣離自諸法，是識故，如眼等識。謂極成言亦流至此，第七、八識他不成故。謂第六識，五識之餘，若別言第六者，即恐他以七、八二識為不定過，但總言餘。別取第六意兼七、八亦在其中，如眼等識，亦不親緣離自諸法，故以為喻，即是緣不離自識境為境義。

The Commentary states: The second syllogism states: the remaining consciousness also does not directly cognize dharmas separate from itself; because it is a consciousness; like visual and other consciousnesses. The word 'commonly recognized' also carries over to this, because the seventh and eighth consciousnesses are not established for the other party. It refers to the sixth consciousness, which remains beyond the five consciousnesses. If one specifically said 'the sixth consciousness,' one would fear the other party raising the fallacy of inconclusiveness (anaikāntika) based on the seventh and eighth consciousnesses; hence one only says 'the remaining' in general. Specifically taking the sixth consciousness, the intention also subsumes the seventh and eighth within it. Like the visual and other consciousnesses, it also does not directly cognize dharmas separate from itself; hence this is used as the example, which means taking as its object an object that is not separate from its own consciousness.