成唯識論述記 7.219

7.219

述曰：「五識」者，牒頌也。謂前五轉識，顯是眼等五根所生之識也。何以一處而總言者？種類相似，故總說之。一、謂俱依色根；二、同緣色境；三、俱但緣現在；四、俱現量得；五、俱有間斷，種類相似，故總合說。即是第二句上二字。

[The Commentary states:] 'The five consciousnesses' takes up the phrase from the verse. It refers to the first five evolving consciousnesses, indicating that they are the consciousnesses produced by the five sense faculties such as the eye. Why are they spoken of collectively in one place? Because their types are similar, they are spoken of collectively. First, they all rely on physical faculties; second, they all take physical objects as cognitive objects; third, they all cognize only the present; fourth, they are all attained through direct perception (pratyakṣa); fifth, they all have interruptions. Since their types are similar, they are combined and stated collectively. This refers to the top two characters of the second line.