﴿ وَلَا تَنكِحُوا۟ مَا نَكَحَ ءَابَآؤُكُم مِّنَ ٱلنِّسَآءِ إِلَّا مَا قَدْ سَلَفَ ۚ إِنَّهُۥ كَانَ فَٰحِشَةًۭ وَمَقْتًۭا وَسَآءَ سَبِيلًا ﴾

“AND DO NOT marry women whom your fathers have previously married - although what is past is past: this, verily, is a shameful deed, and a hateful thing, and an evil way.”

And do not marry women whom your fathers married unless it be a thing of the past; surely that is obscene and abominable an evil way. This verse alludes to the protection of honor and staying within the limits of respect. If it is natural for a man to hate that another should bed his wife then sons should be forbidden from disregarding the rights of their fathers in seeking to bed their [fathers'] wives.