In Jain Dharma, when a woman has her period (rajasvalā), the usual practice is to avoid touching murti (deities), puja articles, and entering the garbhagriha (inner sanctum). The focus shifts to bhav (intention) and inner devotion, and activities are adapted to keep the temple environment pure.

What to do if the period begins at the temple

• Do not touch idols, abhishek vessels, puja articles, doors, or railings inside the sanctum. Stay outside and perform mental devotion.
• If you realize you have begun during the visit, bow with folded hands from outside the sanctum and gently leave without touching sacred items.

During the period (until it ends and you have bathed and changed)

• Avoid dravya-pūjā (abhishek, aarti, anga-pujā), touching murtis, scriptures, or temple upkarans.
• Prefer bhāva-pūjā at home: Navkār japa, stavans, quiet meditation, svādhyāya (listening to study), and charitable/compassionate conduct.
• After the period ends and you have bathed and worn clean clothes, you may resume normal temple worship.

Sect-wise notes (local practices may vary)

• Digambar: Generally stricter; entry into the garbhagriha and handling murtis or puja items is avoided during menstruation.
• Śvetāmbar: Often allows distant darshan and non-idol worship from outside the sanctum; specifics vary by temple and local achar.
• Always follow your temple’s maryādā and your guru’s guidance.

Essence This is about ritual shuddhi and carefulness, not the person’s spiritual worth. Inner devotion, humility, and ahimsa remain central.

You can read more here:

• What is followed in periods in Jainism
• A Jain woman knowing of her menstruation went to temple before doing then (practical maryādā)