Rasaratnākara (Rasāyanakhaṇḍa)

one should place it in a kacchapayantra tortoise-shaped apparatus and heat it until the mercury is fully integrated. (87) Combine all of this in a mortar with the juice of jambīra citrus fruit. Place the entire mixture into a kacchapayantra and add sulfur. (88) Add an equal portion of kāsamarda Cassia occidentalis juice, process it into a paste, and seal it. Cook it in a puṭa heating pit until fully processed. In this way, integrate six parts of sulfur. (89)

One should incorporate this gradually, then remove the mixture and triturate it for one yāma three-hour period with jambīra juice. Then, take niścandra-abhraka mica without luster. (90) Add an equal amount of amlavetasa Garcinia pedunculata and process it with mercury. Add one-sixteenth part of caṇakāmla chickpea acid and tālaka orpiment in a mortar. (91) Add one-tenth part of kāsīsa ferrous sulfate, triturating it for the duration of a day. Place the entire mixture into a pakvamūṣā calcination crucible and seal its opening. (92)

Cook it in a dolāyantra swinging apparatus within a sāranāla a type of medicinal decoction for three days over a gentle fire. Remove and wash it in hot kāñjika fermented sour gruel to see if it is well-digested. (93) If it remains undigested, cook it again in the kacchapa apparatus containing a biḍa a special salt mixture. In this way, through repeated processing, the gagana mica becomes equal to pure gold. (94)

Take gold leaves coated in the bile of a peacock. Add them in a ratio of one to four or five, and triturate them in a mortar. (95) Heat it in the apparatus as before, and ensure the gold is fully integrated. In this way, one should integrate one-sixteenth part of gold into the mercury. (96) Following this, integrate one-sixteenth part of calcined vajra diamond, equal to the gold. Add tālaka, kāsīsa, and jambīra, and continue the trituration. (97)

Then, triturate the mercury with the juices of divine medicinal plants. After the mixture has been placed in a vajramūṣā diamond-crucible, it should be bound and processed again into powder. (98) One should consume a guñjā-sized portion with honey and sugar. This mercury, when bound to the sky, conquers death within six months. (99) One becomes free from wrinkles and gray hair, possessing great strength and valor. For one week, process nīlī Indigofera tinctoria, muṇḍī Sphaeranthus indicus, and the three fruits referring to triphalā (myrobalans) with the juice of bhṛṅga Eclipta prostrata. (100) Macerate this mixture and consume one karṣa following it with honey and ghee.

The Alchemy of Chemistry: Section on Rejuvenation

Svayambhū-rasa The Self-Manifest Mercury

One should take pure mercury and twice its amount of sulfur, making a black sulfide kajjalī black powder of mercury and sulfur in a mortar. (101) Add to this an equal part of kānta-cūrṇa iron-filings (lit. lover-iron), or alternatively, tīkṣṇa sharp/hard iron or muṇḍa pig iron. Combine everything in the mortar and triturate for one day with the juice of kanyakā Aloe vera. (102)

Form a ball and place it in a copper vessel. Cover it with castor leaves and heat it for half a yāma 1.5 hours until it becomes warm. (103) Place it inside a pile of grain and remove it after two days. Then, process it seven times each with the juices of kanyā aloe, bhṛṅgī Eclipta prostrata, kākamācī Solanum nigrum, muṇḍī Sphaeranthus indicus, nirguṇḍī Vitex negundo, and citraka Plumbago zeylanica. (104–105)

Next, process it seven times each with the decoctions of koraṇṭa, bākucī, brāhmī, sahadevī, punarnavā, śālmalī, and vijayā. Also, process it seven times with triphalā decoction. (106) Combine the resulting powder with nutmeg, clove, trikaṭu the three pungents: ginger, black pepper, long pepper, triphalā, and cardamom, using equal parts of each. (107)

Consume one karṣa of this powder, combined with an equal amount of honey, daily for one year to arrest the onset of old age. This svayambhū-rasa is handed down through the tradition of the siddhas adepts. (108) One should also lick half a pala a weight measure of tila sesame and aśvagandhā powder with honey.

Kakṣapuṭa-rasa The Hidden-Pouch Mercury

Nirguṇḍī, nalikā, vajrī, brahmadandī, tridaṇḍikā, śatapuṣpā, mudgaparṇī, śvetākā, vānarī, jayā, peṭārī, kṛṣṇadhattūra, vijayā, and kṣīrakandaka. (109–110)

Triturate pure mercury with these substances, either collectively or individually, for three days. Apply this paste to the kṣīrakandaka milky tuber or the vajrakanda diamond-tuber. (111) Seal it within the core of the tuber using mud, place the tuber inside a vajramūṣā diamond-crucible, and cook it in a small puṭa heating pit. (112) Repeat this process of grinding and cooking seven times in sequence. This is called the kakṣapuṭa-rasa. Consume one guñjā with honey. (113) One lives until the end of the age, free from gray hair and wrinkles. Within one year, there is no doubt that the person’s body becomes like mercury. (114)