天台菩薩戒疏 2.13

2.13

「如是」下，結勸指廣。言「六品」者，《梵網》大本有〈六六品〉，恐是品名，以彼品中明六根等六六法，故名〈六六品〉。彼猶廣釋是故指之。

From 'such' onward, it concludes the exhortation and points to the broader text. As for 'six chapters', the large text of the Brahmajāla has a 'Chapter on the Six Sixes'; it is feared this is a chapter title, named 'Chapter on the Six Sixes' because that chapter clarifies the six-six dharmas such as the six sense bases. That text still explains them extensively, which is why it points to it.