Buddha uvaca, cf BG 2.21-22


The ego [primarily] pure has been defiled on account of the external passions since the beginningless past, (359) and what has been added from outside is like a [soiled] garment to be washed off. As when a garment is cleansed of its dirt, or when gold is removed from its impurities, they are not destroyed but remain as they are; so is the ego freed from its defilements. (Lankavatara-sutra, Sagathakam 755-756, D.T. Suzuki, London 1932)