Does kissing a non-mahram woman invalidate ablution?

Kissing a non-mahram woman is forbidden, and whoever does so must repent. Ablution is invalidated by kissing a non-mahram woman or one's wife, according to the majority of scholars, whether the kiss was intentional or unintentional. The Malikis and Shafi'is cite the hadith of Ibn 'Umar, which states that a man kissing his wife and touching her with his hand is among the acts of "touching" that necessitate ablution. Kissing a non-mahram woman is even more forbidden and more likely to invalidate ablution.