成唯識論掌中樞要 1.68

1.68

或總為三，謂初、中、後。初一頌半名初；次二十三頌半名中；後五頌名後。初、中及後一切善故。廣中分三：初十四頌半廣三能變體；次一頌廣依識變；後八頌廣假說等言。

Or it is divided into three as a whole: namely, the beginning, the middle, and the end. The first verse and a half is called the beginning; the subsequent twenty-three and a half verses are called the middle; the final five verses are called the end. This is because the beginning, middle, and end are all wholesome. In the broad [explanation in the middle] there are three: the first fourteen and a half verses broadly explain the substance of the three transforming [consciousnesses]; the next one verse broadly explains transformation based on consciousness; the latter eight verses broadly explain statements such as "metaphorical designation".