Narrated Jabir: A man was buried with my father. I had a desire at heart for that (place for my burial). So I took him out after six months. I did not find any change (in his body) except a few hair that touched the earth.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues:
If there is a truly reasonable and valid benefit, it is permissible to exhume the deceased from their first grave and bury them in another place.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 3232