Tahaarat

Q:

1. If I saw some whitness on my underwear and doubt whether it is impurity or not, does this break my wudhu?

2. What if I have prayed before seeing the whiteness, is my prayer valid?

Q: If I had a wet dream and I need to do ghusul, after washing my private parts, is it necessary to wash my feet because when I wash my private parts, the water will flow to my feet?

Q: On my house carpet, sperm and urine has been on the carpet, however it has dried up and there's no trace left. Does the impurity from this area of the carpet transfer to people who step on the carpet? If not, what if someone with wet feet steps on the area. Also, does impurity transfer when it is wet or damp?

Q: Will a floor become pure (taahir) by mopping it three times for urine? As we stepped on the urine and walked while wet?

It will be done by mopping one time then dip the mop in new water then mop again and repeat two more times?

Q: I am facing a weird issue for the past couple of weeks. I have observed that while performing istinja on an Indian toilet, the water splashes from the toilet surface and there is a chance that these splashes might end up on one's body, clothes or shoes.

What is the Islamic ruling for such splashes? From my part, I try very hard to avoid water from splashing but the water ends up splashing anyways. 

Q: Is a small amount of waterproof substance excused in wudhu?

Q: Can tayamum be done on a wet stone?

Q:

1. Is niyyah necessary for tayamum?

2. Do I have to specify that I am doing tayamum for wudhu or for ghusal?

3. Do I have to specify that I am doing tayamum for a specific reason i.e for praying salaah, for janaazah, etc.?

4. If I do tayamum for janaazah, can I pray salaah with that tayamum?

5. Is tayamum valid without niyyah?

Q: My non-baaligh brother often has accidents. This time, when he pooped in bed, I threw the bedsheets in the washing machine along with his underwear which was first washed by hand, and set the rinse 2 times for a total of 4 hours. During the second rinse I even threw in some of my clothes. As I was taking everything out of the dryer, the stains from the sheets were completely gone, and all the clothes smelled good, but then his underwear had a very light brownish colour and some odor. Does that mean the underwear is impure and everything else that was washed with the underwear is also impure? I put everything in the dryer before I noticed any of this so does that mean the dryer has to be purified now? What must I do?

Q: In the process of wudhu, there are 4 fardhs; washing the face, the arms, masah of the head and washing the feet. Kindly clear my doubt if washing of the face comprises of gargling the mouth and cleaning the nose.