In Jain dharma, there is no scriptural rule that directly talks about “second cousin marriage” (marriage of the children of first cousins). Jain āgams focus on vows, right conduct, and spiritual progress, not on detailed blood‑relationship charts.

Important points:

1. Scripture vs. Social Custom

- Jain scriptures mainly stress: ahimsā, satya, brahmacharya (self‑control), aparigraha, and good grihastha (householder) life. - Detailed rules like “can I marry a second cousin?” come more from community customs, local laws, and medical/common‑sense views, not from core Jain doctrine.

1. General Jain View on Marriage

- Jainism sees marriage as a social institution, not a strict religious sacrament. - The main concern is: - Is there mutual consent and respect? - Can both follow Jain values (ahimsā, strict vegetarianism, honesty, etc.) together?

1. Close‑relation marriages

- Many Jain communities traditionally avoid very close-blood marriages (like own cousin, same gotra, etc.) as a social and health precaution, not because āgams give a direct command about second cousins. - Modern medical advice in many countries is cautious even about some cousin marriages because of possible genetic issues. A Jain householder is expected to use right knowledge and right conduct, so such medical prudence fits Jain thinking.

1. Have second‑cousin marriages happened among Jains?

- Practically, in a large and old community spread over many regions, yes, such marriages certainly have happened. - Whether they are accepted or rejected usually depends on: - Local community custom - Family views - Civil law of the country - But there is no universal Jain‑scriptural statement saying “second cousin marriage is sinful” or “second cousin marriage is ideal.”

1. What is spiritually important in any Jain marriage

- Both partners try to: - Support each other in following Jain vows as far as possible. - Avoid himsā in food, profession, and daily life. - Create a peaceful, ethical family environment.

If you are asking for a practical decision (e.g., “Can I marry my second cousin?”), it is wise to:

• Check local law of your country.
• Consider medical/genetic counselling.
• Talk with knowledgeable Jain elders in your own sangh, because customs differ by region and sect, even though the core dharma is the same.