There came a slave and pledg- ed allegiance to Allah's Apostle (ﷺ) on migration; he (the Holy Prophet) did not know that he was a slave. Then there came his master and demanded him back, whereupon Allah's Apostle (ﷺ) said: Sell him to me. And he bought him for two black slaves, and he did not afterwards take allegiance from anyone until he had asked him whether he was a slave (or a free man) - Hadith Muslim 1602 (islam)
Book 22, Hadith 152
Book 10, Hadith 3901
Hadith An Nasai 4621 (en en2) "A slave came and gave his pledge to the Messenger of Allah to emigrate, and the Prophet did not realize that he was a slave. Then his master came looking for him. The Prophet said; 'Sell him to me.' So he bought him for two black slaves, then he did not accept until he had asked; 'Is he a slave?''' - Hadith An Nasai 4621 (islam)
Book 44, Hadith 173
Vol. 5, Book 44, Hadith 4625
Hadith Tirmidhi 1596 (en en2) "A slave came to give the pledge to the Prophet (ﷺ) for Hijrah, but the Prophet (ﷺ) did not realize that he was a slave. So his master came, and the Prophet (ﷺ) said: 'Sell him to me.' So he purchased him for two black slaves. After this he (ﷺ) would not take the pledge from anyone until he asked him if he was a slave."
[He said:] There is something on this topic from Ibn 'Abbas.
[Abu 'Eisa said:] The Hadith of Jabir is Hasan Gharib Sahih, we do not know of it except as a narration of Abu Az-Zubair.
- Hadith Tirmidhi 1596 (islam)
Book 21, Hadith 58
Vol. 3, Book 19, Hadith 1596
Allah's Messenger (ﷺ) was on a journey and he had a black slave called Anjasha, and he was driving the
camels (very fast, and there were women riding on those camels). Allah's Messenger (ﷺ) said, "Waihaka
(May Allah be merciful to you), O Anjasha! Drive slowly (the camels) with the glass vessels
(women)!" - Hadith Al Bukhari 6161 (islam)
Book 78, Hadith 187
Vol. 8, Book 73, Hadith 182
Hadith Al Bukhari 6202 (en en2) Once Um Sulaim was (with the women who were) in charge of the luggage on a journey, and
Anjashah, the slave of the Prophet, was driving their camels (very fast). The Prophet (ﷺ) said, "O Anjash!
Drive slowly (the camels) with the glass vessels (i.e., ladies). - Hadith Al Bukhari 6202 (islam)
Book 78, Hadith 226
Vol. 8, Book 73, Hadith 221
When we conquered Khaibar, we gained neither gold nor silver as booty, but we gained cows, camels,
goods and gardens. Then we departed with Allah's Messenger (ﷺ) to the valley of Al-Qira, and at that time
Allah's Messenger (ﷺ) had a slave called Mid`am who had been presented to him by one of Banu Ad-Dibbab.
While the slave was dismounting the saddle of Allah's Messenger (ﷺ) an arrow the thrower of which was
unknown, came and hit him. The people said, "Congratulations to him for the martyrdom." Allah's
Apostle said, "No, by Him in Whose Hand my soul is, the sheet (of cloth) which he had taken
(illegally) on the day of Khaibar from the booty before the distribution of the booty, has become a
flame of Fire burning him." On hearing that, a man brought one or two leather straps of shoes to the
Prophet and said, "These are things I took (illegally)." On that Allah's Messenger (ﷺ) said, "This is a strap, or
these are two straps of Fire." - Hadith Al Bukhari 4234 (islam)
Book 64, Hadith 272
Vol. 5, Book 59, Hadith 541
I came and behold, Allah's Messenger (ﷺ) was staying on a Mashroba (attic room) and a black slave of
Allah's Messenger (ﷺ) was at the top if its stairs. I said to him, "(Tell the Prophet) that here is `Umar bin Al-
Khattab (asking for permission to enter)." Then he admitted me. - Hadith Al Bukhari 7263 (islam)
Book 95, Hadith 17
Vol. 9, Book 91, Hadith 368
"We were with the Messenger of Allah in the year of Khaibar, and we did not get any spoils of war except for wealth, goods and clothes. Then a man from Banu Ad-Dubaib, who was called Rifa'ah bin Zaid, gave the Messenger of Allah a black slave who was called Mid'am. The Messenger of Allah set out for Wadi Al-Qura. When we were in Wadi Al-Qura, while Mid'am was unloading the luggage of the Messenger of Allah, an arrow came and killed him. The people said: 'Congratulations! You will go to Paradise,' but the Messenger of Allah said: 'No, by the One in Whose hand is my soul! The cloak that he took from the spoils of war on the Day of Khaibar is burning him with fire.' When the people heard that, a man brought one or two shoelaces to the Messenger of Allah and the Messenger of Allah said: 'One or two shoelaces of fire.'" - Hadith An Nasai 3827 (islam)
Book 35, Hadith 67
Vol. 4, Book 35, Hadith 3858
Hadith Al Bukhari 6707 (en en2) We went out in the company of Allah's Messenger (ﷺ) on the day of (the battle of) Khaibar, and we did not
get any gold or silver as war booty, but we got property in the form of things and clothes. Then a man
called Rifa`a bin Zaid, from the tribe of Bani Ad-Dubaib, presented a slave named Mid`am to Allah's
Apostle. Allah's Messenger (ﷺ) headed towards the valley of Al-Qura, and when he was in the valley of Al-
Qura an arrow was thrown by an unidentified person, struck and killed Mid`am who was making a
she-camel of Allah's Messenger (ﷺ) kneel down. The people said, "Congratulations to him (the slave) for
gaining Paradise." Allah's Messenger (ﷺ) said, "No! By Him in Whose Hand my soul is, for the sheet which
he stole from the war booty before its distribution on the day of Khaibar, is now burning over him."
When the people heard that, a man brought one or two Shiraks (leather straps of shoes) to the Prophet.
The Prophet (ﷺ) said, "A Shirak of fire, or two Shiraks of fire." - Hadith Al Bukhari 6707 (islam)
Book 83, Hadith 84
Vol. 8, Book 78, Hadith 698