妙法蓮華經玄贊 8.292

8.292

俱名法師。此中多以滅後名為法師，其現在得弟子之稱，然現得記，此中亦說名法師故。又以現在受持者易，略而不說；滅後持者甚為難故，所以獨得法師之名。又現習學者名為弟子，其八部等亦名法師。

Both are called Dharma teachers. Here, it mostly refers to those after his extinction as Dharma teachers, while those in the present receive the designation of disciples; yet, as they receive prophecy in the present, they are also spoken of here as Dharma teachers. Furthermore, because upholding it in the present is easy, it is omitted and not mentioned; upholding it after his extinction is extremely difficult, and so they solely obtain the name of Dharma teacher. Moreover, those studying it in the present are called disciples, and the eight classes and so on are also called Dharma teachers.