Answer

In Jain Dharma, I am not aware of a specific canonical Jain Āgama passage that directly discusses “intercaste marriage” in the modern social sense.

However, Jain scriptures and traditional Jain ethics strongly emphasize that spiritual worth is based on:

• Right faith — samyag darśan
• Right knowledge — samyag jñān
• Right conduct — samyag cāritra
• Non-violence — ahiṁsā
• Self-restraint — saṁyam
• Karma and inner purity, not birth-status

Explanation

Jain Dharma does not teach that a soul’s spiritual capacity depends on caste. Every jīva is capable of liberation through purification of karma.

A commonly accepted Jain principle is that bondage and liberation depend on one’s own karma and conduct, not caste or family birth. Therefore, from a spiritual viewpoint, caste is not the measure of a person’s true worth.

Regarding marriage specifically, Jain householders are traditionally advised to choose a spouse with compatible:

• Dharma values
• Ethical conduct
• Family responsibility
• Commitment to ahiṁsā and Jain way of life

But I cannot give a precise Jain shastra reference that explicitly says “intercaste marriage is allowed” or “intercaste marriage is prohibited,” because such a direct statement is not clearly established in the main Jain scriptural tradition in that modern terminology.

Spiritual Understanding

From Jain perspective, the deeper question is not caste, but whether the marriage supports:

• Dharma
• Ahiṁsā
• Self-control
• Respect for vows
• Spiritual progress

If a marriage increases attachment, conflict, violence, or adharma, it becomes spiritually harmful. If it supports peace, restraint, compassion, and dharma, it is spiritually more favorable.

Takeaway

Sorry, I can only provide information that is clearly established within Jain tradition. A direct Jain shastra reference specifically mentioning “intercaste marriage” in the modern sense is not clearly established, but Jain Dharma places spiritual value on conduct and karma rather than caste by birth.