In Jainism, "pehela kaad nu pani" refers to water that has been freshly drawn or filtered, especially for use in rituals, daily consumption, or by monks and nuns. According to Jain practices, particularly for monks and nuns (sadhu/sadhvi), the water should be freshly filtered (with a cloth or filter to remove micro-organisms) and ideally used within one prahar (approximately 3 hours) of its preparation. This is to minimize harm to living beings (jiva) that may develop in stagnant water over time.

For householders, the rules are generally less strict, but it is still recommended to use freshly filtered water, especially during the Chaturmas (monsoon period) due to increased microbial life.

Summary: Pehela kaad nu pani should ideally be used within 3 hours (one prahar) according to Jain monastic discipline.