Nikaah & Marriage Issues

Q: How many witnesses are required for the nikaah to be valid?

Q: Which women are declared haraam for a man to marry?

Q: What are the Shar’ee requirements for the nikaah to be valid?

Q: Is it advisable for one who has the need to get married to delay on account of studying further?

Q: I would like to find out whether a water birth is permissible or not, also the lady is allowed to wear a loose top? Please clarify.

Q: Can you tell me does the following count as hurmut musahara:

If say a man is sitting in a car where someone whom hurmut musahara can happen with is sitting next to him or he is lying his head on their lap, as an example, he is a young adult and is ill. Now he gets an erection due to him having thoughts of other women or seeing other women on tv or on the streets whom marriage is allowed for him. The erection is NOT at all due to the person whom hurmut musahara can happen with being next to him nor is there any lust in his heart on the person nor is his intention of any kind on the person whom hurmut musarhara can happen with, not in the slightest but erection only happens due to him thinking of other women or seeing other women whom he can marry. But due to sitting in a car and the person is sitting next to him or his head in their lap some of his body parts like legs is touching them. Does this count?

Also Can Hurmut Musahara happen between a man and his son?

Q: What is the sunnah method and dua'a for the father to read for the daughter before the daughter leaves the home (in marriage)? Is there anything regarding the sprinkling of water on the daughter's forehead by the father? Furthermore, is the dua'a read by the father, the same dua'a the husband should read for his wife?

Q: My friend Zaid's father Bakr died long back so his mother Fathima married another man Haamid. Now Haamid was also married before and his wife Ruqayyah died. In short both Fathima and Haamid are widow. This man Haamid had one daughter Aaisha with his first wife Ruqayyah. Now my friend zaid is going to marry this girl Aaisha. Is this marrage valid or haram?

Q: I have been married for two years. My husband converted to Islam two years back. My question is if he doesn't pray or fast, am I responsible for his behavior? Will I be punished if he doesn't believe in Islam any more? What should I do?

Q: If the second wife gives up her nights and accepts less financial support as she is by the means to. She has verbally stated this to her husband. She is happy to be in the protection of marriage and her husband is very good to her. Is the husband committing a wrong because he is not equal?