The Prophet (ﷺ) came to know that one of his companions had given the promise of freeing his slave after his death, but as he had no other property than that slave, the Prophet (ﷺ) sold that slave for 800 dirhams and sent the price to him.
Reference: Sahih al-Bukhari 7186 In-book : Book 93, Hadith 48 USC-MSA web (English) : Vol. 9, Book 89, Hadith 296 (deprecated)
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