with a man invalidates wudu, provided that no relationship of unmarriageable kinship exists between them; accordingly, touching a mahram does not break ablution in the sound view of his school.

As for the well-known opinion in the Hanbali school, it is that wudu is nullified only by a touch that is accompanied by desire and with no material barrier between the two bodies. This, moreover, is the stronger view, for the likelihood of pre-seminal fluid (madhī) being emitted arises only when the contact is charged with sexual desire.