Paryushana (Jain Prakrit: पज्जोसण Pajjosavana) is a festival within Jainism. Normally Śvētāmbaras refer to it as Paryushana, while Digambaras refer it as Das Lakshana. Paryushana means “abiding, coming together”. It is believed that the devas do an eight-part puja for the tirthankaras, which takes eight days. Jains celebrate this period as Paryushana.
Paryusana is a time when the laity take on vows of study and fasting with a spiritual intensity similar to temporary monasticism.
The duration of Paryusana is for eight or ten days and comes at the time when the wandering monks take up temporary residence for the monsoon period or “cāturmāsa” “four-month”. For this minimum duration, Paryushana must be initiated by panchami (the fifth day) of the shukla paksha phase of Bhadra. The last day is called Samvatsari, short for Samvatsari Pratikramana. The date for the Paryushana festival is Bhadra shukla chaturthi. Because of computational and other differences, there can be some minor differences among various subsects. Recently there has been an attempt to standardize the date. Because at this time the monks have settled in the town for a longer duration, it is time for the householders to have an annual renewal of the faith by listening to the statement of the Dharma and by meditation and vratas (self-control). Digambaras starting a 10-day period from Bhadra shukla panchami, during which the dashalakshana vrata is undertaken. Śvētāmbara celebrate an eight-day festival that ends with Bhadrapada shukla chaturthi.
During the 8-day festival, the Śvētāmbara Murtipujaki recite the Kalpa Sūtra, which includes a recitation of the section on birth of Mahavira on the fifth day. Some Śvētāmbara Sthanakvasis recite the Antagada Sutra, which details the life of great men and women who attained moksha during the eras of Neminatha and Mahavira. The Digambara recite the Tattvartha Sutra of Umaswati. On dashami, a sugandha-dashami vrata is made. Digambaras celebrate Ananta chaturdashi, special worship is done on this day. Many towns have a procession leading to the main temple.