If you mean diksha / monk or nun vows in Jainism, then marriage is not allowed. After taking muni/arya/sadhvi diksha, one follows complete celibacy and renunciation, so marriage is not permitted.

If you are still a Jain layperson (shravak/shravika) and have not taken monastic vows, then marriage is generally allowed in Jain tradition.

If you want a simple rule:

• Diksha taken → No marriage
• Only religious practice as a householder → Marriage is allowed

If you meant a different Jain ritual or instrument, the answer can change based on that specific vow.