Rasahṛdayatantra (1728 manuscript)

hundreds of times, one should carry out the process a hundred times with one's own kośa casing/container. [29]

Regarding the application of gandhita sulfur-treated substances: [29]
Take copper, add an equal part of the white śilā mineral/orpiment, and incorporate the powder of gairika ochre and mākṣika pyrite, along with ṭankaṇa borax, lead, and tīkṣṇa iron/sharp metal. [28]

Tīkā Commentary: Using that copper, slowly perform the marriage alchemical union with the lord the metal... [28]

Image description: The manuscript depicts a schematic representation of a furnace (puṭa) used for the calcination of metals, surrounded by vessels containing herbal extracts.

To fix the sulfur with the copper: refine the copper twenty times using the mākṣika pyrite infusion. In the copper, pour the melting-water distillate and heat it in the puṭa furnace. [29]

Regarding the secana sprinkling/infusion and purification methods:
Decorate it seven times according to the method with the juices of nirguṇḍī Vitex negundo, kākamācī Solanum nigrum, and gṛhakanyā aloe vera. Carry out the process on the copper for the sake of excellent bīja seed/starter metal. [30]

It states:
As long as it becomes twenty-four times [better], it becomes the excellent bīja. Then, by the prescribed method, mākṣika pyrite is added, which is also twenty-four times [refined]. [31]

Tīkā: One should refine the copper until it reaches this state. When it becomes twenty-four times [refined], it is the best bīja. Again, one should name it "the superior one."

It should be refined until it is of a light quantity and essence. Initially, in the crucible, one should place the essence; it becomes the superior bīja. [32]

After having purified the essence of light quantity, initially place twelve parts of sulfur in the crucible. [33]

Tīkā: Having purified the essence to a light, small quantity, perform the sixteen purifications. Then, in the crucible, add twelve parts of sulfur to the essence. [33]

It says:
Alternatively, the bālaka young/immature essence, inside a fourteen-finger crucible, should be heated with a mild puṭa furnace heat. [33]

Tīkā: The essence, placed in a fourteen-finger crucible, should be heated with a mild puṭa—this is an exaggeration likely meaning a precise, low heat. Now, the method of piṣṭī paste/amalgam is stated: one should perform the work with one and a half parts. Place the paste into a crucible measuring nine fingers. [34]

Tīkā: With the sulfur-born [product], one should perform the bīja work. Placing the paste in a nine-finger crucible, one performs the procedure. [34]

The mass for coating the paste:
Equal parts of nirguṇḍī, kākamācī, gāñjika fermented gruel, gṛhakanyā, honey, and saindhava rock salt make the mass. [35]

Tīkā: Nirguṇḍī is śephālikā; kākamācī is known as vāmasī; gāñjikā is well-known... madhu is honey, and saindhava is salt. This mass is to be made with faith. [35]

The jāraṇa incineration/absorption cycle:
With these, by the puṭa method, make it firm until it attains six-fold [strength] with sulfur, tālaka orpiment, kāśīśa green vitriol, and salt-alkali. [36]

Tīkā: Using these pastes in the puṭa, work until it is firm, as if not visible meaning fully absorbed. The six-fold [mixture] includes sulfur, tālaka, kāśīśa, lavaṇa salt, and kṣāra alkali. [36]

It states:
Add all these in equal parts; the medicinal mass should be six-fold. [37]

Tīkā: Tāpya gold pyrite should be equal to all. Place it in the kūrma-yantra tortoise-apparatus to be heated. [37]

Heating it in the puṭa for three ghaṭikās approx. 72 minutes, one should carefully grind the calcined residue from the crucible. [38]

Tīkā: One should sweat steam/heat it; the kūrma-yantra is where the explosion rupture might occur. [38]

The special method:
By the sāraṇā transmutation infusion with equal bīja, and after that, the pratisāraṇā counter-infusion should be performed with the mercury-born [substance] mixed with bīja. [39]

Tīkā: The sāraṇā is to be done with equal parts of bīja. The pratisāraṇā follows this. [39]

Characteristics

The anusāraṇā subsequent infusion is stated:
The anusāraṇā should be three-fold. If not, the nāga lead is hundred-fold... [40]

Tīkā: One should protect the mercury; this is the relationship. [40]

Now the kāmaṇa transmuting color/work is stated:
This kāmaṇa was previously taught regarding mākṣika, burnt sulfur, śilā, ochre, coral, tuttha copper sulfate, and poisons. [41]
With gairika, ṭankaṇa, bhūmitala, tāra silver, and the juice of śakragopa cochineal insect; with buffalo milk, curd, and iron—this is the method. [42]