Is a person considered a slave because his skin is black?

Question:
Regarding the issue of slavery: Do most Muslims understand that anyone with black skin is considered a slave? What is the ruling on this understanding?

Answer:
This is ignorance. People are of two types: there are black people, white people, and red people, all among the children of Adam.
Q: But is this the understanding of most Muslims?
A: No, they simply saw many slaves in the past who were black, so they assumed that was the case.
Q: Were there not people in the time of the Prophet (peace and blessings be upon him) who were white and were slaves?
A: Yes, Zayd ibn Harithah was white, and his son Usamah was black.
Q: What is the legal criterion regarding the issue of slavery?
A: Slavery is by ownership: ownership through purchase, or ownership through capture in war.
Q: Whether he is white or black?
A: Whether he is black or white, even if he is more handsome than Yusuf.
Q: The hadith of the Messenger (peace and blessings be upon him): Here the Messenger (peace and blessings be upon him) mentioned that the slave is a Habashi, implying that he is black?
A: He did not say "black," he said "a Habashi slave," even if he is not black. That is, even if a slave who is a Habashi were to become your leader, listen and obey.