Making a vow to give a certain amount of sadaqah every time one commits a sin

Q:

  1. My question is that if a person makes a promise to Allah that every time he commits a certain sin he will give 'x' amount of money to charity and then commits that sin, does he have to give that money as well as kaffarah, or is that money classed as kaffarah?
  2. Secondly, is their a way to end such a promise as even though that person is trying to eradicate that sin, occasionally there are relapses, and therefore to prevent committing two sins i.e the sin itself and the breaking of the promise, could that person end this promise?

Rejecting a fardh of Deen

Q: My question is that I know in lslam if someone rejects any fardh of Deen then he is no longer a Mu'min, he will become a kaafir. So I ask you how many faraaidh are there in Islam? Can we have a count of them? Can we have a list of them as well, so that we can save ourselves.

Dua after Salaah

Q: In Nizamuddin markaz we have seen that the Imam saheb does not make dua after salah with congregation and we make dua individually but in other masaajid the imam makes very short dua with congregation. Which one is sunnat?

Woman exposing her breast in front of her mahrams

Q: I am 26 years old and have 5 elder sisters and a mother and no brothers. According to Islam can a women expose her breast in front of a mahram man and husband? During house-chores my mother and sisters expose their half breast and sometime full breast, this causes my private part to become erect and I have a discharge. I have no sexual desire with my mahrams but the beauty of the breast always make me have a discharge. My friend told me that this is not haraam or sin. You can easily discharge without any fear. Is this haraam or sin?

Girl and boy sitting in seclusion before nikaah

Q: When visiting a family to meet a potential girl for marriage, is it permissible for the girl and boy to sit in a separate room and speak about their plans, requirements etc, since it is embarrassing to speak in front of all the family members? There is a big window to the room so people in the adjacent room can see everything that is going on, but they can't hear.

Washing of impurity from the carpet

Q: In jamaat I had a wet dream and I was sleeping in the jamaat khaanah and I had nothing under me and when I had a wet dream I looked inside and there was fresh semen drops and also a patch of semen on my clothes and after I looked I laid back on my side again when this occurred I was laying on my back the while having a wet dream I slowly moved to my side then I checked and could see a big patch of semen. I was half asleep and I moved a bit more to my side. I don't know if the semen touched the carpet in the jamaat kanah. It's worrying me.