The ashes (Asthi) should be treated with utmost respect as they represent the last physical connection to the departed.
Collection: Collect them cleanly after cremation, usually on the third day or as per family custom.
Container: Place them in a clean earthen pot (Kalash/urn) or a copper/brass urn. Avoid plastic if possible.
Wrapping: Wrap the urn securely in a clean, new cloth, typically white or red cotton.
Storage: Keep the urn in a clean, pure, and respectful place in the home, often near the family altar or in a designated spot. Avoid placing it on the floor directly; use a clean cloth or pedestal. Maintain purity in the area where the ashes are kept. Do not take them into impure places (like bathrooms).