Slavery in Islam.. Muslim response to the cardinal Lafigri

Many enemies of Islam do not stop talking and writing about the atrocities of slavery in Islamic countries, condemning those who adhere to the Muhammadan religion of this matter, and attributing its ugliness to the texts of Sharia that the Prophet, peace and blessings be upon him, brought.
Since these charges were baseless and there was no proof to support them, the love of truth called on the writer to search for this topic in reliable religious books, which allowed him to establish the argument and provide evidence that the Noble Qur'an, in addition to not considering the slave to be in the same position as an animal, came with many texts and commandments that oblige Muslims to take good care of him and take care of him, and to treat them with kindness and mercy, which is something that the majority of Europeans are ignorant of until now, even those who live in the lands of the East, oh God, except what is rare. ,