GodlyVerses

“We used to sell our slave women and the mothers of our children (Umahat Awaldina) when the Prophet (ﷺ) was still living among us, and we did not see anything wrong with that.” - Hadith Ibn Majah 2517 (islam)
Book 19, Hadith 6
Vol. 3, Book 19, Hadith 2517

If pollinated date-palms are sold and nothing is mentioned (in the contract) about their fruits, the fruits will go to the person who has pollinated them, and so will be the case with the slave and the cultivator. Nafi' mentioned those three things. - Hadith Al Bukhari 2203 (islam)
Book 34, Hadith 149
Vol. 3, Book 34, Hadith 406

A man decided that a slave of his would be manumitted after his death and later on he was in need of
money, so the Prophet (ﷺ) took the slave and said, "Who will buy this slave from me?" Nu'aim bin
`Abdullah bought him for such and such price and the Prophet (ﷺ) gave him the slave. - Hadith Al Bukhari 2141 (islam)
Book 34, Hadith 93
Vol. 3, Book 34, Hadith 351

"A slave came and pledged to the Prophet 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,' and he bought him for two black slaves. Then he did not accept the pledge from anyone until he asked: 'Is he a slave?"' - Hadith An Nasai 4184 (islam)
Book 39, Hadith 36
Vol. 5, Book 39, Hadith 4189

A person amongst the Ansar who had no other property declared a slave free after his death. Allah's Messenger (ﷺ) sold him, and Ibn al-Nahham bought him and he was a Coptic slave (who) died in the first year of the Caliphate of Ibn Zubair. - Hadith Muslim 997d (islam)
Book 27, Hadith 86
Book 15, Hadith 4116

The Prophet (ﷺ) said, "Allah says, 'I will be against three persons on the Day of Resurrection:
-1. One who makes a covenant in My Name, but he proves treacherous.
-2. One who sells a free person (as a slave) and eats the price,
-3. And one who employs a laborer and gets the full work done by him but does not pay him his
wages.' " - Hadith Al Bukhari 2227 (islam)
Book 34, Hadith 174
Vol. 3, Book 34, Hadith 430

[3]And thy estimation shall be of the male from twenty years old even unto sixty years old, even thy estimation shall be fifty shekels of silver, after the shekel of the sanctuary.
[4]And if it be a female, then thy estimation shall be thirty shekels. - Bible(OT) Leviticus 27:3-4 (bible torah)

And if a man sell his daughter to be a maidservant, she shall not go out as the menservants do. - Bible(OT) Exodus 21:7 (bible torah)

The Prophet (ﷺ) bought a slave for two slaves. - Hadith Abu Dawud 3358 (islam)
Book 23, Hadith 33
Book 22, Hadith 3352