Sahih Al Bukhari Hadith Number 1352

Narrated Jabir: A man was buried along with my father and I did not like it till I took him (i.e. my father) out and buried him in a separate grave.

23  Funerals (Al-Janaa’iz)
Hadith number 1352
Volume no 2
Chapter: 77 (Can the dead body be taken out of its grave)