維摩經玄疏 2.4

2.4

一、釋別名者，此經以「維摩羅詰所說」標名，名異眾經，故云「別」也。

First, explaining the specific title: this sūtra is titled with 'Spoken by Vimalakīrti'; its name differs from the other sūtras, so it is called 'specific.'