Ahadith 2227 – 2229 (below) are repeats. See linked text for related posts.
Volume 3, Book 46, Number 729:
Narrated Ibn ‘Umar (radiallaahu `anhu):
The Prophet (sallallaahu `alayhi wasallam) said, “If one manumits his share of a common slave (Abd), and he has money sufficient to free the remaining portion of the price of the slave (justly estimated), then he should free the slave completely by paying the rest of his price; otherwise the slave is freed partly. “
Volume 3, Book 46, Number 730:
Narrated ‘Abdullah (radiallaahu `anhu):
Allah’s Apostle (sallallaahu `alayhi wasallam) said, “Everyone of you is a guardian and is responsible for his charges. The ruler who has authority over people, is a guardian and is responsible for them, a man is a guardian of his family and is responsible for them; a woman is a guardian of her husband’s house and children and is responsible for them; a slave (‘Abu) is a guardian of his master’s property and is responsible for it; so all of you are guardians and are responsible for your charges.”
Volume 3, Book 46, Number 731:
Narrated Abu Huraira and Zaid bin Khalid (radiallaahu `anhumaa):
The Prophet (sallallaahu `alayhi wasallam) said, “If a slave-girl (Ama) commits illegal sexual intercourse, scourge her; if she does it again, scourge her again; if she repeats it, scourge her again.” The narrator added that on the third or the fourth offence, the Prophet (sallallaahu `alayhi wasallam) said, “Sell her even for a hair rope.”
Volume 3, Book 46, Number 732:
Narrated Abu Huraira (radiallaahu `anhu):
The Prophet (sallallaahu `alayhi wasallam) said, “When your servant brings your meals to you then if he does not let him sit and share the meals, then he should at least give him a mouthful or two mouthfuls of that meal or a meal or two meals, as he has prepared it.”
Rights of a servant over his employer based on this article are as follows:
1- He should give his servant the same food as he eats
2- He should clothe him as he clothes himself.
3- He should not give him more to do than he is able for, and if he does that he should help him.
4- He should pay him a wage that is appropriate to his work and his efforts.
5- He should not insult him or hit him.
6- He should treat him well and be kind to him.
7- He should overlook his mistakes and shortcomings.
Read more here.