成唯識論述記 6.324

6.324

述曰：又加行等四道為五。然加行中有近有遠，名二加行。四道如後第十卷解，即此并前，合有五解。

The Commentary states: Furthermore, the four paths of preparation and so forth make five. However, within preparation there are the proximate and the remote, which are called the two preparations. The four paths are as explained in the tenth fascicle below. Together with the previous ones, there are five explanations in total.