維摩經玄疏 6.28

6.28

一、約不共般若別教明法性實相，斷除二障，離生死涅槃二邊，別以不空之理、自性清淨心、如來藏理為法性實相，是則聲聞在座如聾如瘂也。譬如破鑛得真金，異頗梨也。真金不可破壞，隨意作種種器，頗梨易破，不得迴轉作種種器也。

First, clarifying the true mark of dharma-nature in terms of unshared prajñā under the distinctive teaching: severing the two obstructions, leaving behind the two extremes of birth-and-death and nirvāṇa, it distinctively takes the principle of the non-empty, the intrinsically pure mind, and the principle of the tathāgatagarbha as the true mark of dharma-nature; thus the śrāvakas in the assembly were as if deaf and mute. It is like breaking ore to obtain genuine gold, which differs from crystal: genuine gold cannot be destroyed and can be made into various vessels at will; crystal is easily broken and cannot be refashioned into various vessels.