Toynbee writes...
Toynbee writes, **“**The Blacks in the United States who were emancipated jurisdically in 1862 are, with good reason, feeling now, more than a century later, that they are still being denied full human rights by the white majority of their fellow-citizens.[^1] Islam's war against slavery aimed at changing the attitude and mentality of the whole society, so that after emancipation, slaves would become its full-fledged members, without any need of demonstrations, strikes, civil disobedience and racial riots.
And Islam achieved this seemingly impossible objective without any war. To say that Islam waged no war against slavery would not be a true statement. A war it waged, but a war in which neither sword was resorted to, nor blood was spilled. Islam aimed at striking at the roots of its foe and created allies by arousing the finer instincts of its followers. A three-pronged attack on slavery was launched. Firstly, Islam placed restrictions on acquisition of slaves.
Prior to Islam, slavery was practised with abandon. Debtors were made slaves, war captives were either killed or made slaves. In weaker nations, people were hunted like animals, killed or captured and reduced to slavery. Islam, in unambiguous terms, forbade its followers to enslave people on any pretext. The only exception was an idolatrous enemy captured in a war which was fought either in self-defence or with the permission of the Prophet or his rightful successors.
He could put the arrested soldiers to death, condemn them to slavery or otherwise keep them under his authority or clutch. Domination: A chief or ruler could enslave, depending on his sweet wish, anyone residing under his domain. Guardianship: A father or grandfather had absolute authority over his offspring. He could sell or gift him or her away; could lend him or her to someone else, or exchange him or her with another's son or daughter.
When Islam came on the scene, it nullified and negated the last two factors completely.