In Jainism, offering rice grain to God is not a standard or doctrinal ritual. Jain practice centers on the inner purification of the self (ahamkara, non-violence, truth, charity, and right conduct) and on venerating the Tirthankaras as enlightened beings, not on appeasing deities through material offerings.

What you might be doing instead:

• If you want to express reverence or share merit, many Jains perform dana (charity) or food offerings to monks, nuns, or the needy, which aligns with ahimsa and generosity.
• Puja or bhakti in Jain paths is typically about remembrance, hymns, and meditation rather than asking favors from a god. It is more about cultivating virtues and reminding oneself of spiritual goals.

Difference between Digambar and Shwetambar:

• Both traditions honor the Tirthankaras and practice devotion, but neither prescribes a canonical ritual of offering rice to a god. The emphasis remains on self-purification and ethical conduct rather than ritual offerings to deities.

If you’d like, I can share a simple Jain perspective on how to offer food or charity in a way that aligns with Jain dharma.