In Jainism there isn’t a universal canonical minimum age for performing an Abhishek. The practice is devotional and often guided by local temple rules, guru guidance, and the specific ritual being performed.

• In many communities, adults or those who have received proper instruction participate more fully.
• For children or younger devotees, parents or a guru usually supervise and adapt the ritual appropriately.
• There can be slight differences between Digambar and Shwetambar practices in how Abhishek is performed or who is eligible, depending on the tradition and local custom.

If you want a precise rule for a particular temple or community, please check with your local Jain temple or guru for their guidelines.