瑜伽論記 1.585

1.585

第七文中，鑽即生火，明知先有火性，銷金為水，將知先有水性，變地成金，將知先有金性。

In the seventh passage, drilling wood immediately produces fire, making it clearly known that the nature of fire previously existed; melting gold turns it into liquid, showing that the nature of water previously existed; transforming earth into gold shows that the nature of gold previously existed.