"Abdul Majid bin Wahb narrated to us, he said: 'Al-'Adda' bin Khalid bin Hawdhah said to me: "Shall I not read to you a letter that was written for me from the Messenger of Allah ﷺ ?'" He said: 'I said: "Of course." So he took out a letter for me: "This is what Al-'Adda' bin Khalid bin Hawdhah purchased from Muhammad, the Messenger of Allah ﷺ: He purchased from him a slave' - or - 'a female slave, having no ailments, nor being a runaway, nor having any malicious behavior. Sold by a Muslim to a Muslim.'" (Using translation from Tirmidhī 1216)
قَالَ لِيَ الْعَدَّاءُ بْنُ خَالِدٍ أَلَا أُقْرِئَكَ كِتَابًا كَتَبَهُ لِي رَسُولُ اللهِ ﷺ؟ قَالَ قُلْتُ بَلَى فَأَخْرَجَ لِي كِتَابًا «هَذَا مَا اشْتَرَى الْعَدَّاءُ بْنُ خَالِدِ بْنِ هَوْذَةَ مِنْ مُحَمَّدٍ ﷺ اشْتَرَى مِنْهُ عَبْدًا أَوْ أُمَّةً لَا دَاءَ وَلَا غَائِلَةَ وَلَا خِبْثَةَ بَيْعَ الْمُسْلِمِ الْمُسْلِمَ»