肇論新疏 3.87

3.87

初二句喻說，塵如萬累，金如靈覺，鑛穢去而真金現，萬累盡而靈覺存。陶，謂陶汰。冶，鎔冶。

The first two sentences speak through metaphor: the dross is like the myriad entanglements, and the gold is like the luminous awareness; when the impurities of the ore are removed, the pure gold appears; when the myriad entanglements are exhausted, the luminous awareness remains. "Smelting" means washing and filtering; "refining" means melting and smelting.