Dhanvantari said:
1. Listen to me! Ishall describe the tastes and the other characteristics and merits of the herbs. A physician who knows the properties of the herbs, such as taste, strength and flavour, will be able to save kings and other people.
2. O One possessing powerful arms! The tastes such as sweet, sour and saline are stated to come from the moon. The tastes-bitter, astringent and pungent-are (known to be) from fire.
3. The herbs have three flavours—bitter, sour and saline, The strength (of the herbs) is said to be of two kinds hot and cold.
4-5a. O Foremost among the brahmins! The effect of the herbs is indescribable. Those that are sweet, astringent and bitter are said to be having cold potency. The rest are stated to be hot.
5b-6. Although guduchi has the bitter taste, it is hot on account of its high potency. O One whoshows respect! Pathyā, though an astringent, is considered) hot. Although meat is sweet, it is said to be hot.
7. The saline and sweet tastes would become sweet flavour. The sour things that are hot are also said to become so. The rest would have pungent flavour.
8. One has to determine the drugs that have got modified in their potency and flavour from their efficacy. Honey, although sweet, is said to be pungent in flavour,
9. (The herb)should be boiled with water, sixteen times its proportion, until it comes down to four times the proportion. This is the general rule for (preparing) a decoction whercver (something else) has not been stated.
10-12. The decoction (thus prepared) (should be composed) of water alone. In a decoction prepared with oil, itshould be four times that of the drug. A wise manshould take equal quantity (of water) to that of the herb. Then the herb and oilshould be added. Oilshould be one-fourth the measure of the substance. The herb that is free from water would be (known as) extraction in oil. The process of preparing decoctions of the herbs in oil has been explained. O Suśruta! (The method of preparation) of the lambative is also similar.
13-15a. The decoction that is clear and having little medicinal ingredient would be as above described. (The dosage) for pulverised drugs is stated to be an aksha (a particular measure of weight equal to 16 mäsas) and four palas (a particular weight) for the decoction. This measure is said to be middling. There is no hard and fast rule about the dosage. O Fortunate one! The measure of the dosage has to be decided according to the age, time, strength, digestive power, place, herb and disease.
15b-16a. Those tastes are known to be saumyaḥ which increase the quality of the ingredients. Those that are madhuraḥ are specially known to increase the quality.
166-17a. That substance which has the qualities in equal proportion to the defects would be for betterment. The opposite would subdue the effect.
17b-20. O Foremost among men! There are said to be three functions in this body, such as, eating, sleeping and coition, one has to pay attention to these always. One would get destroyed if there is no indulgence or is over-indulgence (in any one of these). An exhausted body has to be strengthened. Obesity of a personshould be reduced. The middle type has to be protected. These are considered to be the three different types of bodies. Gratification and non-gratification are said to be the two courses of action. Oneshould moderately eat (food) that is good (for health) after the food already taken had been digested.
21-24a. O Foremost among men! The remedies are classified into five groups--juice, levigated powder, the distilled, the cold and decoction. Juice is known to be that got by pressing. Levigated powder is got by pulverising the drug after heating. The distilled is that got after boiling. The cold one is that allowed to cool the previous night. Decoction is that distilled immediately after boiling. There are one hundred and sixty ways of doing so. One who knows the ways would become inconquerable. That person is skilled in the preparation of mixtures.
24b. The purity of food is for the sake of digestion. A good digestion is the root cause of the strength of men.
25-30a. Oneshould eat the three myrobalans together with the rock-salt, that would give good complexion to a king. (One would get similar benefit by using) the juice of venison together with rock-salt or curd or small quantities of milk. One whose constitution is windyshould eat (a food) that has either more juice or the same proportion of juice. It is said that massaging (the body) (should be done) in summer. In winter itshould be in equilibrium. It is known to be of middling type in the spring. The intense massaging in the summer is first done on the skin and then on the muscles, veins, blood and the body. The bones would get strengthened and become fleshy. A wise manshould massage well theshoulders, arms,shanks, knees, collarbones and the chest as before as if (one is attacking) an enemy. After having massaged the joints well, oneshould stretch them slowly without making a violent jerk.
30b-33. Oneshould not do any physical exercise while the food still remains undigested nor after taking food, nor after drinking (water). Oneshould never do any exercise in the half of the prahara1 after a quarter part of the day. Oneshould bathe in cold water (only) once. Bathing in trepid wacer would remove fatigue. Oneshould not forcibly retain the breath in the heart. Physical exercises would remove the (excessive) phlegm. Massaging would remove the (excessive) wind. Bathing would remove the excessive bile. (Oneshould not) expose his body to sunlight or enjoy the company of women (after doing exercises). Menshould not do exercises affecting one's body under the sunlight.
1. An eighth part of a day.
Summary of chapter 282 of the Agni Purāṇa is as follows:
The Āyurveda of plants — covering both horticulture and botanical medicine — is presented. Specific trees are prescribed for each direction around a house: plakṣa in the north, vaṭa in the east, āmra in the south, and aśvattha in the west. Tree planting is recommended on the nakṣatras Dhruva, Svāti, Hasta, Rohiṇī, Śravaṇa, and Mūla. The construction and maintenance of water tanks for irrigation are described. Care instructions for Ariṣṭa, Aśoka, Punnāga, Śirīṣa, Priyaṅgu, Kadalī, Jambu, Vakula, and Dādima trees, including seasonal watering schedules and fertilization with fish water and viḍaṅga, are prescribed.