Is repentance from a particular sin acceptable while I am a victim of another?

I once read a hadith in an islamic forum but the reference for the hadith was not mentioned. The hadith sounds beautiful but i'll love to confirm it's authenticity before i quote it to anyone. The hadith goes like this, the Prophet(saw) said, " When one of youdoes her best to be a good wife, The reward equals someone who is fasting all day and praying all night." I'll really appreciate your help.

Is it permissible to buy an apartment from the bank by instalments?

In Australia during christmas there are huge discounts on things like clothing, furniture, electronics etc. is it permisible to shop to get this discount which is generally not available during other part of the year?

A brother of ours has recently become Muslim. During his days of Jaahiliyyah (ignorance – i.e., before he became Muslim), he earned a lot of money by dealing in drugs. He brought this money with him and opened a big bookstore and got married using this money. Recently he has been told that it is not permissible for him to give this money in charity, because Allaah is Good and only accepts that which is good, Our question is, what should he do with this money, and how sound is what he has been told?.

Can you recommend a book in english that explains what it really means that the Qu'ran is not a creation; and what we should believe in as Muslims?

Some times when i wake up in the morning, i find some wet coming out. Please don't take it as a wet dream, or urine, becuase the sticky stuff comes out usually just after i have woken up in the morning. Most of the days i have to wash my under wear just becasue of that, and sometimes i wash my pants too.

I read it somewhere that if its not semen, just that sticky stuff than we don't need to perform ghusl, and only wuzu is enough to offer prayers. If it is then what about the clothes?. The same stuff comes out during some salacious situations also, though i try to stay away from all that kind of stuff.

I am usually out at school most of the day and I have to use the bathroom, I can't just go home to make Istinjah. Should I make Wudu and pray or should I miss the prayer and make it up later?.

Is it allowed to open unnecessary talk after prayer's Iqamat before the Imam begins to pray?

If a man was praying the sunnah of the fajr [prayer], or other than it, and whilst doing so the [iqaamah for the obligatory] prayer was called, is he required to [promptly] terminate his prayer in order to join the imaam [and congregation] in [the obligatory] prayer, or should he complete his prayer [first]?

I am doing research on the concept of monotheism in the world's five major religions. Could you please explain to me the concept of monotheism in Islam?
 

It has become common, of late, for people to recite the Qur'ân in a style that comprises a lot of affected weeping. Their recitation loses its sweetness as a consequence. It is closer to wailing than to a recitation. What do Islamic teachings say about this approach to reciting the Qur'ân?