Then all of you will be obliged to become humble before him...
Then all of you will be obliged to become humble before him and he is the person who will not allow preference of the white over the black, of the masters over their slaves and of the wealthy over the poor.” He added: "When we sit together we feel that none is superior to you two persons and other persons at the helm of affairs amongst Quraysh in the matter of eloquence, wit, manner of conversation and debate, but in spite of this as soon as Muhammad arrives in our gathering, all of us tremble with fear and our most stubborn persons are reduced to hopeless perplexity before him!" Umayya bin Khalaf said to Abu Hanzala (Abu Sufyan) and Abul Hakam: "Now that the affairs of Muhammad have assumed such dimensions in the eyes of our elders and he has created differences in our community, and he ridicules our gods, you should no longer find fault with a freeman or be rude towards a slave, because the son of Mughira and the son of Rabi'a look on Muhammad and his innovations with great respect.
Abu Khalid bin Walid who was sitting in the centre of the assembly was leaning comfortably on a pillow and was hearing these discussions with a smile on his lips. When the reproach of Khalaf reached this stage, he (i.e. Walid) crossed his legs and said, without the smile disappearing from his face: “O son of Khalaf! What talent do you see in the person of your own slave, Bilal bin Raba?
Do you think that the efforts of Bilal for becoming free from the clutches of the son of Khalaf and his getting rid of his slavery is more important than the injustice and violence committed by the son of Khalaf against Muhammad? My Qurayshi brethren! you renounce the establishment of truth and indulge in bias. If you behave towards your slaves and slave girls humanly and are just to them, they will never leave you and will have no grudge against you.
However, while dealing with them you forget one point and don’t keep in mind the fact that they too are human beings like you and possess eyes, ears and tongues like you and also possess intellects like you to understand the meanings of greatness and nobleness just as your intellects do. If at the time of their becoming your slaves you had not forgotten this simple fact they would have been friendly with you.
However, after having forgotten this point they too don't have any affection for you and if they obey you apparently they are annoyed with you at heart, and this is the very thing which makes them revolt against you.