In Jainism, "Nisihi" is a term used to denote renunciation or abandonment of certain activities, thoughts, or objects. It is a practice of mentally setting aside worldly affairs and focusing the mind on spiritual activities, especially before starting rituals, prayers, or entering sacred spaces.

The number of times "Nisihi" is to be said depends on the context and the specific sect's practices:

1. Before entering the temple or starting any religious activity: Traditionally, "Nisihi" is said three times. This is to ensure that one has mentally and physically renounced all worldly activities and is prepared for spiritual practice.

1. During daily rituals (Samayik, Pratikraman, etc.): "Nisihi" is also recited at various points to mark the transition from one phase of the ritual to another, often three times.

1. When taking vows or observing certain fasts: Saying "Nisihi" signifies a firm resolve to abandon certain foods, activities, or behaviors.

Summary: You typically say "Nisihi" three times before beginning Jain religious activities or entering a sacred space, as a symbolic act of renunciation and purification. However, the exact number may vary based on local customs or the instructions of your religious teacher (Guru).