question #3 Sahih al-Bukhari 2543, Book 49, Hadith 26 : What is the importance of freeing slaves in Islam, as demonstrated by the Prophet Muhammad (ﷺ) in his interaction with Aisha’s slave-girl?

I have loved the people of the tribe of Bani Tamim ever since I heard, three things, Allah’s Messenger (ﷺ)
said about them. I heard him saying, These people (of the tribe of Bani Tamim) would stand firm
against Ad-Dajjal.” When the Sadaqat (gifts of charity) from that tribe came, Allah’s Messenger (ﷺ) said,
“These are the Sadaqat (i.e. charitable gifts) of our folk.” `Aisha had a slave-girl from that tribe, and
the Prophet (ﷺ) said to `Aisha, “Manumit her as she is a descendant of Ishmael (the Prophet).