維摩經略疏垂裕記 10.61

10.61

四、斥破二乘。經「不肖」者，《廣雅》「肖，似類也。」《禮記》云「其子不肖」，謂骨肉不似其先，即儜惡之類也。

Fourth, refuting and breaking the two vehicles. As for the sūtra's 'unworthy' (bùxiào), the Guangya says: 'Xiào means similar or resembling.' The Liji says: 'His son is unworthy,' meaning the flesh and blood do not resemble their progenitor, which is the class of weak and wicked.