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## The *Vyavahar Sutra* on *Prasravan* Practices:
**Two *Prasravan* Practices are mentioned:**
1. **Small *Prasravan* Practice:** This practice is undertaken in the beginning of autumn or at the end of summer, outside the village or capital, in a forest, forest fortress, on a mountain, or in a mountain fortress. The *anagari* (non-householder) should undertake this practice. If the *anagari* eats food on the day they begin the practice, they should complete it with six fasts. If they begin the practice without eating, they should complete it with seven fasts.
**Rules for the *Prasravan* Practice:**
* The *bhiksu* (monk) should drink their urine whenever it comes. They should drink it during the day, but not at night.
* They should not drink urine that contains worms, but they should drink urine that is free of worms.
* They should drink urine that contains semen, but they should not drink urine that is free of semen.
* They should not drink urine that contains oil, but they should drink urine that is free of oil.
* They should not drink urine that contains blood, but they should drink urine that is free of blood.
* They should drink all the urine that comes, whether it is little or much.
This small *Prasravan* practice should be followed according to the *sutra* and the knowledge of the *Jina*.
2. **Large *Prasravan* Practice:** This practice is undertaken in the beginning of autumn or at the end of summer, outside the village or capital, in a forest, forest fortress, on a mountain, or in a mountain fortress. The *anagari* should undertake this practice. If the *anagari* eats food on the day they begin the practice, they should complete it with seven fasts. If they begin the practice without eating, they should complete it with eight fasts.
**Rules for the *Prasravan* Practice:**
* The *bhiksu* should drink their urine whenever it comes. They should drink it during the day, but not at night.
This large *Prasravan* practice should be followed according to the *sutra* and the knowledge of the *Jina*.
**Discussion:**
This *sutra* describes two *bhiksu* practices. Only *nirgrantha* (those who have renounced all worldly possessions) can undertake these practices. *Nirgranthi* women cannot undertake these practices. These practices are undertaken in isolation, outside the village, in the forest or mountains, for seven to eight days.
The *bhasya* (commentary) states that only those who have completed three *sanhanan* (stages of spiritual development) and are *purvadhari* (those who have renounced all worldly possessions) can undertake these practices. These practices are undertaken in the months of *Prashtadha* (July-August) or *Mrigashirsha* (November-December).
One of the two *Prasravan* practices involves seven nights of *kayotsarga* (a practice of complete relaxation and stillness), and is called the small *Prasravan* practice. The other practice involves eight nights of *kayotsarga*, and is called the large *Prasravan* practice.
Both practices can be started with a fast on the first day, or by eating food on the first day. Those who eat food on the first day have one less day of fasting, but the duration of *kayotsarga* is the same for everyone.