What is the nature of the prohibition of marrying the daughter of one's wife after the marital relationship with her mother has ended, and what is meant by "al-hujoor" in the noble verse?

The daughter of a man's wife with whom he has consummated the marriage is forbidden to him due to affinity. This includes her daughters' daughters and her sons' daughters, however far removed, as stated in the Almighty's words: "And your stepdaughters who are in your guardianship, [born] of your women unto whom you have gone in. But if you have not gone in unto them, there is no sin upon you." The most preponderant opinion is that the Almighty's saying, "who are in your guardianship," is a description to clarify the common situation, and not a restriction.