Sahih Al Bukhari Vol 1 No. 662: Bk 10.88
https://sunnah.com/bukhari:693
Narrated Anas:
The Prophet said, "Listen and obey (your chief) even if an Ethiopian whose head is like a raisin were made your chief."

Sahih Al Bukhari Vol 1 No. 664: Bk 10.91
https://sunnah.com/bukhari:696
Narrated Anas bin Malik: The Prophet said to Abu−Dhar, "Listen and obey (your chief) even if he is an Ethiopian with a head like a raisin."

Sahih Al Bukhari Vol 9 No. 256: Bk 93.6
https://sunnah.com/bukhari:7142
Narrated Anas bin Malik: Allah's Apostle said, "You should listen to and obey, your ruler even if he was an Ethiopian (black) slave whose head looks like a raisin."

Sahih Muslim Bk 5, Number 2334: Bk 12.205
https://sunnah.com/muslim:1066g
'Ubaidullah b. Abu Rafi', the freed slave of the Messenger of Allah (may peace be upon him), said: When Haruria (the Khwarij) set out and as he was with 'Ali b. Abu Talib (Allah be pleased with him) they said," There is no command but that of Allah." Upon this 'Ali said: The statement is true but it is intentionally applied (to support) a wrong (cause). The Messenger of Allah (may peace be upon him described their characteristics and I found these characteristics in them. They state the truth with their tongue, but it does not go beyond this part of their bodies (and the narrator pointed towards his throat). The most hateful among the creation of Allah us one black man among them (Khwarij). One of his hand is like the teat of a goat or the nipple of the breast. When 'Ali b. Abu Talib (Allah be pleased with him) killed them, he said: Search (for his dead body). They searched for him, but they did not find it (his dead body). Upon this he said: Go (and search for him). By Allah, neither I have spoken a lie nor has the lie been spoken to me. 'Ali said this twice and thrice. They then found him (the dead body) in a rain. They brought (his dead) body till they placed it before him (Hadrat 'Ali). 'Ubaidullah said: And, I was present at (that place) when this happened and when 'Ali said about them. A person narrated to me from Ibn Hanain that he said: I saw that black man.

(23)
Chapter: The permissibility of selling animals for animals of the same kind and of different quality
(23)
باب جَوَازِ بَيْعِ الْحَيَوَانِ بِالْحَيَوَانِ مِنْ جِنْسِهِ مُتَفَاضِلاً ‏‏

Jabir (Allah be pleased with him) reported:
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)
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى التَّمِيمِيُّ، وَابْنُ، رُمْحٍ قَالاَ أَخْبَرَنَا اللَّيْثُ، ح وَحَدَّثَنِيهِ قُتَيْبَةُ، بْنُ سَعِيدٍ حَدَّثَنَا لَيْثٌ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرٍ، قَالَ جَاءَ عَبْدٌ فَبَايَعَ النَّبِيَّ صلى الله عليه وسلم عَلَى الْهِجْرَةِ وَلَمْ يَشْعُرْ أَنَّهُ عَبْدٌ فَجَاءَ سَيِّدُهُ يُرِيدُهُ فَقَالَ لَهُ النَّبِيُّ صلى الله عليه وسلم ‏"‏ بِعْنِيهِ ‏"‏ ‏.‏ فَاشْتَرَاهُ بِعَبْدَيْنِ أَسْوَدَيْنِ ثُمَّ لَمْ يُبَايِعْ أَحَدًا بَعْدُ حَتَّى يَسْأَلَهُ ‏"‏ أَعَبْدٌ هُوَ ‏"‏ ‏.‏
Reference     : Sahih Muslim 1602
https://sunnah.com/muslim:1602
In-book reference     : Book 22, Hadith 152
USC-MSA web (English) reference     : Book 10, Hadith 3901

Chapter 29: THE BATTLE OF BADR
Sahih Muslim Bk 19, Number 4394: Bk 32.103
https://sunnah.com/muslim:1779
It has been narrated on the authority of Anas that when (the news of) the advance of Abu Sufyan (at the head of a force) reached him. the Messenger of Allah (may peace be upon him) held consultations with his Companions. The narrator said: Abu Bakr spoke (expressing his own views), but he (the Holy Prophet) did not pay heed to him. Then spoke 'Umar (expressing his views), but he (the Holy Prophet) did not pay heed to him (too). Then Sa'd b. 'Ubada stood up and said: Messenger of Allah, you want us (to speak). By God in Whose control is my life, if you order us to plunge our horses into the sea, we would do so. If you order us to goad our horses to the most distant place like Bark al−Ghimad, we would do so. The narrator said: Now the Messenger of Allah (may peace be upon him) called upon the people (for the encounter). So they set out and encamped at Badr. (Soon) the water−carriers of the Quraish arrived. Among them was a black slave belonging to Banu al−Hajjaj. The Companions of the Messenger of Allah (may peace be upon him) caught him and interrogated him about Abu Sufyan and his companions. He said: I know nothing about Abu Sufyan, but Abu Jahl, Utba, Shaiba and Umayya b. Khalaf are there. When he said this, they beat him. Then he said: All right, I will tell you about Abu Sufyan. They would stop beating him and then ask him (again) about Abu Sufyan. He would again say', I know nothing about Abu Sufyan, but Abu Jahl. 'Utba, Shaiba and Umayya b. Khalaf are there. When he said this, they beat him likewise. The Messenger of Allah (may peace be upon him) was standing in prayer. When he saw this he finished his prayer and said: By Allah in Whose control is my life, you beat him when he is telling you the truth, and you let him go when he tells you a lie. The narrator said: Then the Messenger of Allah (may peace be upon him) said: This is the place where so and so would be killed. He placed his hand on the earth (saying) here and here; (and) none of them fell away from the place which the Messenger of Allah (may peace be upon him) had indicated by placing his hand on the earth.