Son touching his mother with lust

Q:

1. If a son or biological mother touch each other with lust, will it break the marriage relation with son's father and mother?

2. If the husband's brother touches  his brother's wife, will the nikaah break?

A:

1. Yes.

2. No.

And Allah Ta'ala (الله تعالى) knows best.

Answered by:

Mufti Ebrahim Salejee (Isipingo Beach)