In Jainism, throwing or offering rice (often called "Aksata" or "Akshata") in temples is a symbolic act performed during rituals and worship. The rice grains are usually uncooked and whole, representing purity, prosperity, and the wish for auspiciousness.

Here’s why this practice is followed:

1. Symbol of Purity and Non-violence: Unbroken rice grains signify purity and are considered non-violent, as they have not been cooked or harmed. Offering pure rice reflects the Jain principle of ahimsa (non-violence).

1. Expression of Devotion: The act of offering rice is a gesture of respect and devotion to the Tirthankaras and deities. It shows the devotee’s humble surrender and intention to renounce worldly attachments.

1. Auspiciousness: Rice is associated with prosperity and good fortune in Indian culture, and its offering is believed to invoke blessings and positive energy.

1. Part of Rituals: During pujas, abhisheka (ritual bathing of idols), and other temple ceremonies, rice is offered along with flowers, sandalwood, and other items as part of traditional Jain rituals.

It is important to note that in Jainism, offerings are symbolic and the true essence of worship lies in spiritual purity, right conduct, and self-realization. The external act of offering rice is meaningful when performed with the right intention and understanding.