Aparigrah (more correctly: Aparigraha) is a very important Jain principle.

In simple words:

• “Parigraha” = possession, hoarding, attachment to things and people.
• “A-parigraha” = non‑possession / non‑attachment.

So Aparigraha means:

• Not collecting more than you truly need.
• Not getting mentally attached to money, property, gadgets, clothes, status, even to your own opinions.
• Using what you have carefully, without pride, greed, or fear of losing it.

In Jainism:

• For monks and nuns, aparigraha is a Mahavrat (great vow) – they give up almost all possessions.
• For householders (shravak–shravika), it is an Anuvrat (small/limited vow) – they:

- Fix limits on wealth, land, clothes, etc. - Try to reduce desires. - Share surplus in charity. - Live simply and contentedly.

Both Digambar and Shvetambar traditions accept this meaning of aparigraha; practical rules differ, but the core idea of limiting possessions and attachment is the same.

You can read more here