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## Auspicious and Inauspicious Effects of Air
The fifth chapter of Yoga Shastra, verses 48 to 57, describe the effects of different types of air in detail.
**Verse 48:** The air named Purandar, belonging to the earth element, is yellow in color, slightly warm and slightly cool, and pure. It flows slowly, filling the nostrils and extending outwards for eight angulas (finger widths).
**Verse 49:** The air named Varuna, belonging to the water element, is white, cool, and flows rapidly downwards for twelve angulas.
**Verse 50:** The air named Pavana, belonging to the air element, is warm and cool, black in color, and flows diagonally for six angulas.
**Verse 51:** The air named Dahan, belonging to the fire element, is red like the rising sun, extremely hot, and flows upwards in a whirlwind for four angulas.
**Verse 52:** When Purandar air is flowing, one should perform actions like meditation. When Varuna air is flowing, one should perform auspicious actions. When Pavana air is flowing, one should perform actions related to impurities and fickleness. When Dahan air is flowing, one should perform actions like subjugation.
**Verse 53:** When Purandar air is flowing at the beginning or during the questioning of an action, it indicates the attainment of desired results like an umbrella, a fly whisk, an elephant, a horse, a woman, and a kingdom.
**Verse 54:** When Varuna air is flowing at the beginning or during the questioning of an action, it indicates the immediate attainment of a complete kingdom, sons, relatives, friends, and all essential things.
**Verse 55:** When Pavana air is flowing at the beginning or during the questioning of an action, it indicates that all actions like agriculture and service will be fruitless, leading to loss, fear of death, conflict, hatred, and fear.
**Verse 56:** When Dahan air is flowing at the beginning or during the questioning of an action, it indicates fear, sorrow, illness, suffering, a series of obstacles, and the destruction of wealth and grain.
**Verse 57:** All four types of air, Purandar, Varuna, Pavana, and Dahan, are auspicious when they enter the body through the left or right nostril, following the path of the moon or the sun, respectively. They are inauspicious when they exit the body.
This explains the auspicious and inauspicious effects of the four types of air based on their entry and exit from the body.