More verses:
4:23 Forbidden to you are your mothers, and your daughters, and your sisters, and your aunts paternal and maternal, and a brother's daughters, and a sister's daughters; and your milk-mothers, and your milk-sisters; and the mothers of your wives; and your step-daughters - who are your foster children - born of your wives with whom you have consummated your marriage; but if you have not consummated your marriage, you will incur no sin [by marrying their daughters]; and [forbidden to you are] the spouses of the sons who have sprung from your loins; and [you are forbidden] to have two sisters [as your wives] at one and the same time - but what is past is past: for, behold, God is indeed much-forgiving, a dispenser of grace.
4:24 And all married women other than those whom you rightfully possess [through
wedlock]: this is God's ordinance, binding upon you. But lawful to you are all [women] beyond these, for you to seek out, offering them of your possessions, taking them in honest wedlock, and not in fornication. And unto those with whom you desire to enjoy marriage, you shall give the dowers due to them; but you will incur no sin if, after [having agreed upon] this lawful due, you freely agree with one another upon anything [else]: behold, God is indeed all-knowing, wise.
The phrase in 4:24, ? إِلاَّ except مَا what مَلَكْتَ owns أَيْمَانُكُمْ your right hands/ oats /covenants ,? does not seem to mean that it is lawful to have sex slaves. Those perverted interpretations always create many contradictions in the books. Even the Torah says that if a man is attracted to his slave he can take her as his wife, or marry her to his son, and, beyond the corruption, it does not seem to allow sex slaves. The phrase in 4:24 seems to mean wives to whom a man is legally married, and he is not retaining by force, from those 4:23 and 4:24 describe as forbidden. This, being applicable only when the law was revealed, or when a man becomes Muslim and his wife is one of those cases, because ?but what is past is past: for, behold, God is indeed much-forgiving, a dispenser of grace.?
May God increase our knowledge and give us wisdom