Jabir bin 'Abdullah (May Allah be pleased with them) said:
My father called me on the evening before (the battle of) Uhud and said: "I perceive that I shall be among the first from among the Companions of the Prophet (ﷺ) to be martyred, and after him you are the dearest to me. I am under the burden of debt. Pay it and treat your sisters well." Next morning he was among the first to be killed, so I buried him along with another in the same grave. Thereafter, I did not like that I should leave him with another in the grave. So I dug up his corpse after six months and he was in the same condition in which he was on the day when I buried him, except that there was a scratch on his ear. Then I buried him in a separate grave.[Al- Bukhari].
App reference: Book 17, Hadith 43
Arabic/English book reference: Book 17, Hadith 1507