Strengthening mercury by making it fire-resistant

To strengthen (brimhana) mercury the text says it should always be made fire-resistant (agnisaha) by tapana, vasana and kasana, in the order of the Jina doctrine, by which it becomes very rich. In the commentary's account, rock salt, orpiment, Multani earth and grain husk are first ground well with their juices and made thick, and raisins (dakh) and mushakani are mixed in; the mercury so prepared, coated outside and inside with mica paste, is put in a vessel, covered and set at the mouth of the fire. The fire is a dry fire of tad, husk, cow-dung cakes and the charcoals called tushabhramara, karishabhramara, andabhramara and mahakarishabhramara.