Aqaaid

Q: Please give me the ruling regarding the following: 

Question: In order to convince someone of something, someone said, for example, "So-and-so does not have a car. May I be a disbeliever if he has!" Is it considered to be an oath?

Answer: There are two rulings on this issue:

1. If one says, "So-and-so does not have a car. May I be a disbeliever if he has," the relevant person becomes a disbeliever whether that person has a car or not. One's intention does not count. That is, it is not valid.

2. If one utters something that causes disbelief with the intention of taking an oath, he is considered to have taken an oath. However, such an oath is not a Muslim's oath.

Q:

1. Will husband and wife be together in jannah?

2. Which husband will the wife be with if she had more than one husband?

Q: I would like to know about Nawaqid al Islam by Muhammed ibn Abdul Wahhab. I have asked around at bookstores asking about it but no one has heard of it. I read it is about shirk and nullifiers so I would of like to read it but I cant understand if it is reputable to read? Is it something that is debatable? Can you please shed some light on the above mentioned book?

Q: I have a serious problem of blasphemous abusive words that comes frequently for Allah. Now I am just ignoring it but before I didnt know how to deal with them. A few years back, I used to correct those thoughts and repeat within my mind, by saying that Allah is great. And then I used to say blasphemy words to shaitan that you are this..... (bad and vulgar words). Sometime ago I was talking to my relative, and all of a sudden when I was correcting her I spoke those bad words for Allah. Since then I am very upset and have feeling remorse. Sometimes this thought comes that I am actually thinking these words on purpose.

Q: Is it permissible to celebrate a wedding anniversary, not on a large scale but just a little surprise for my husband within the budget of aprox. R500?

Q: When Qayamat will come, shall heaven and hell also be destroyed? Because Allah said that He will make everything vanish including the seven skies. But heaven and hell are on the 7th sky, will they also be vanished?

Q: I was reading a book named "Diwaan e Shafi'i". Kindly guide me about its authenticity.

Should one read it and believe that all this book contains are authentic poems of one of four jurisprudents of Ahlas Sunnah (Imam Muhammad Ibn Idrīs al Shafiʿi)?

Q: I know that if a Muslim helps a non Muslim against Muslims, he leaves the fold of Islam. What is the crieteria of help? For example if I have a non Muslim friend and I talk to her about a Muslim which may lead to physical or mental harm or loss of rights to the said Muslim, will that be kufr too? I used to daily think that this applied in case of war/weaponry only.

Q: Why do madrasahs and Isamic institutions offering Aalima courses bave tarbiyyah on a Thursday specifically?

Q: There's a thing that is bothering me so much. A friend of mine hates marriage. Once there was a chart in my college that listed the sunnahs of Ambiya, one of them was nikah. She didn't believe that it was a sunnah, we told her that it was. Afterwards she jokingly said that she will cut this off the chart. Is this kufr? If this is indeed kufr and takes her out of the fold of Islam, she is going to be super offended and likely to throw a tantrum because nowadays people don't even know things that are kufr. How do I explain this to her?