Every king took slaves and forcefully married the wives of kings they murdered lol. Can't JUST judge one king for doing that while everyone else were also doing that. Hindu kings did it too
Not the kings who followed Dharma. In Dharma, there are explicit rules to treat the wife, mother, daughter, or daughter in law or sister of an enemy with respect equal to one's own mother.
For example Shivaji Maharaj during the raid on Kalyan (October 1667), the Bijapuri Governor Mulla Ahmed's young daughter-in-law, who was extremely beautiful, fell in the hands of a Maratha officer Abaji Sondev. Abaji sent the lady with a suitable escort to Poona thinking that she would be an acceptable present for his young master, but Shivaji, on her arrival exclaimed, "Oh, how nice would it have been if my mother were as fair as you are", implying that in that case, he too would have been equally fair, and at once sent her to her home with apologies for her capture. He also issued a stern warning that in future, during raids and war with the enemy, women on no account should be made to suffer or treated as booty.