The wisdom behind the prohibition of marrying a wife’s mother and the wives of one’s sons upon the mere conclusion of the contract

The questioner:
The Shaykh’s question: Is the wisdom known for the prohibition of marrying a woman’s mother and the wives of one’s sons, even if one has not consummated the marriage with them, but only contracted with one of them?

The Shaykh:
Allah knows best. They did not mention a reason for this, but the text is sufficient. If Allah has stated it in the text, that is enough, whether we know the wisdom or not.

The questioner:
Since Bashir said to my uncle, but she did not say, my beloved, so you know that and the truth

The Shaykh:
If your uncle’s maternal aunt is from the mother’s side, she is not prohibited for him.