Anandakanda 2.8.217

2.8.217

mokṣakakṣārasaṃyuktamandhamūṣāgataṃ dhamet /
satvaṃ candrārkasaṅkāśaṃ patatyasya na saṃśayaḥ //

Combined with the alkali of mokṣaka and placed inside a blind crucible, one should blow upon it;
its essence, radiant like the moon or the sun, falls out—there is no doubt.