In Jainism, Paryushan is one of the most important annual festivals, observed primarily by both the Shwetambar and Digambar sects, though slightly differently in duration and rituals. The word "Paryushan" is derived from the Sanskrit words "paryush" (to stay close or to come together) and "an" (soul, self), thus it signifies "coming together of the soul," or "self-purification."

Paryushan day refers to the individual days within the Paryushan festival, which typically lasts for 8 days for Shwetambar Jains (called Paryushan Parva) and 10 days for Digambar Jains (called Das Lakshan Parva). Each day is dedicated to various forms of spiritual reflection, fasting, self-discipline, study of scriptures (Svadhyaya), and meditation.

The central focus of Paryushan is:

• Pratikraman (introspection and repentance)
• Forgiveness (Kshamapana), culminating in seeking forgiveness from all beings, especially on the last day (Samvatsari for Shwetambars, Kshamavani for Digambars)
• Ahimsa (non-violence), austerities, and vows
• Reading or listening to Jain scriptures

Every "Paryushan day" is an opportunity for Jains to purify their minds, seek forgiveness, and strengthen their commitment to Jain principles.