Ghusal

Q: After mani comes out, do you have to pass urine before ghusl?

Q: Does a few miniscule grains of iron dust (grains are less that 0,5mm) affect the validity of the ghusl or wudhu? Such grains are mostly on ironware like housekeys or after doing some ironwork a few stay on the hands even after washing. You can notice them best if you hold your hands against the sunshine then you see them blinking. Few days after ghusl I notiticed few such miniscule iron grains, you can hardly notice them unless light falls on them so that they blink. The grains are less than 0,5 mm. Seems to me that they are kind of unavoidable especially when walking barefeet on floors etc.

Q: A person has relations with his wife with a cloth inbetween during haiz, both climax. The husband obviously needs to make ghusl but should the wife also take a bath, or is it fine for her to stay in this state? Would the malaa'ika stay away from her in this state and return if she has a ghusl whilst still in haiz.

Q: I have a question regarding ghusl. I get constant doubts about the validity of my ghusl. If someone performs ghusl and then sleeps and then does salaah at night but at night time they get a doubt that if the eye and eyebrow was properly washed in ghusl or if it was accidently left dry (note this is more based on doubt rather than certainty). The person then goes to the bathroom and washes his eye and eyebrow with the niyyah of completing the ghusl. Is this valid and he does not need have to repeat his ghusl?  If one hesitates to wash it due to waswasah or because he isn't sure, does he become napak again?

Q: I would like to find out about sleeping in a state of janaabat, is it fine to sleep in the state of janaabat with ones wife after relations? As a habit is this fine as well? There is no problem waking up for fajr. Just in terms of the consequences I would like to know.

Q: One does ghusl and goes to sleep. Then one awakes and takes wudhu and puts on his khuffs. Then his wudhu gets broken. Then one finds out that there was a solid substance in the cave of his tooth. Does he only needs to remove it and wash the place? Is his masah still valid i.e. can he take wudhu with making masah over the khuffs?

Q: 

1. A person begins fasting in the state of janaabat. Regarding ghusl in this state, is the ghusl valid if the water does not reach the inside of the throat or the inside of the nose (i.e. these actions cannot be exaggerated out of fear of the fast breaking)? Will the ghusl be valid if the water did not reach deep into these areas? Or would the person make ghusl washing the nose and mouth as in wudhu and upon breaking the fast would the person then gargle the throat and wash the inside of the nose properly?
2. A person forgets that they are fasting, and thus gargles and washes the nose intensely so that water is accidentally swallowed. Is the fast broken, bearing in mind that the person forgot that s/he was fasting?

Q: Can one recite quraanic aayats of Dua like Aayatal Kursi for protection in the state of haidh or janaabat?

Q: Is it necessary to remove surma and kaajal from the eyes when taking a ghusl?