Theophylact of Ohrid

But the disciples were offended, as not being fully satisfied with what had been said; for this reason they again question Him, wherefore there follows, And in the house, his disciples asked him again of the same matter.

Catena Aurea by Aquinas ↗

Bede

And in the house again, His disciples asked Him about the same matter. And He said to them: Whoever divorces his wife and marries another commits adultery against her. And if a woman divorces her husband and marries another, she commits adultery. In Matthew, it is written more fully: Whoever divorces his wife except for fornication, and marries another, commits adultery (Matthew V).

On the Gospel of Mark ↗