The claim that Islam narrowed the sources of slavery and widened its outlets

The questioner:
He says: Honorable Shaykh, may Allah grant you success, is this claim correct? That Islam narrowed the sources of slavery and widened its outlets? Is this statement true?

The Shaykh:
This is from the words of those who dislike slavery. It has no basis. Islam made slavery dependent on jihad. If jihad increases, slavery increases; if jihad decreases, slavery decreases; and if there is no jihad, slavery may cease to exist. It is dependent on jihad in the path of Allah; it is one of the rulings of jihad in the path of Allah. As for the fact that it widened the means of getting rid of slavery, yes, that is true, because the Shari'ah loves it and looks toward freedom. Manumission is among the best of deeds, without doubt. Therefore, it established many sources for manumission: expiation, intercourse during Ramadan, and oaths. It also encouraged chastity and manumission in general. Yes.

The questioner:
I say: Honorable Shaykh, may Allah grant you success, but it does not follow from the fact that it encouraged manumission that it disliked slavery.