The Jewel Mine of Mercury

...In the iron [crucible], seal it and cook it until the sulfur is digested. Repeat this again and again until six parts [of sulfur] are digested. Thus, mercury bound with sulfur conquers all diseases. The crucible should be shaped like a jamvīra citron, extended and long, sixteen inches, well-cooked, as desired, placed in a vessel. Surrounded by the sand-apparatus, keep it outside. Place the grain-sized sulfur powder inside the crucible. Then, place the pure mercury, and [add] sulfur again. Place the vessel on the stove, cover the crucible, and cook it on a mild fire? until it becomes smoke-free. When the sulfur-smoke has departed, add the juices of kākamācī. When the substance is digested, fill it again with the juices of nāgavallī betel leaf leaves. When that is digested, fill it with the juices of dhūrta Datura. Cook it on the fire until the sulfur is digested. ...[Repeating the process] as long as the substance is not fully cooked. Having taken the jarā-vyādhi-hara destroyer of aging and disease [mercury], use this sulfur-bound [substance] in all processes. Just as mercury attains the state of kajjala collyrium/black soot, abandoning its inner restlessness and swooning, know that it exists in various colors. These are the killed and swooned mercuries. Each one acts as a carrier of power; use them in their respective processes. The killed one is for success, the swooned one for destroying disease. Either the mercury ash or the swooned one should be utilized? by the method seen in the scriptures. Thus, in the Rasaratnākara of Nityanatha...