Impurities

Q: I use a raised toliet, when I use water to clean my private part, this water touches dirty water in the toliet then some dirty tiny drops of water bounce back to my legs so basically when I was wash my private part with water this water drop down and mix with dirty water then bounce back to me.  When I look carefully I see very tiny drops of water on my legs. Do I need to wash my legs with clean water? I was told by an Aalim that I don't need to wash my legs because they are only tiny drops of water.  I was told to ignore this but I worry my salah will not be valid.

Q: I was making istinja and the toilet water is high and I don't know if any water splashed on me while I was pouring water to clean myself so should I leave it or take bath?

Q: After having sexual relationship with my husband and my husband ejaculates and this gets on the sheet bed. What should I do? Remove the bed sheet and wash it completely or can I just put some water to wash the dirty parts?

Q: What is the proper method of cleaning a chair (which has najasah on it), if the chair is of the same material as a sofa (i.e. the chair is not a
non-porous surface)? Is using a wet cloth sufficient to clean the chair?

Q: I woke up and there was this whitish liquid that was inside. It hadn't come out but after I urinated got up and everything it hurt and I am quiet constipated but I didn't go to pass stool then or anytime before so should I consider it as wadi? The only time I went for stool was yesterday evening and later yesterday I went to the toilet put pressure but nothing come out.

Q: When one washes one's hands in a wash basin/sink, or makes wudhu in a wash basin/sink, there is almost always some splash back from the sink. Is this splash back considered najas (impure)?

Q: If a cloth has najasat will washing it with soap suffice or we have to wash it 3 times?

Q: Is mop water napak?

1. If the floor was dry?
2. There was najaasat on the floor?

Q: I read online that semen is pure so since semen is taahir if we get wet dreams and semen gets into our clothes and body we don't need to wash it. Do you agree?

Q: In jamaat I had a wet dream and I was sleeping in the jamaat khaanah and I had nothing under me and when I had a wet dream I looked inside and there was fresh semen drops and also a patch of semen on my clothes and after I looked I laid back on my side again when this occurred I was laying on my back the while having a wet dream I slowly moved to my side then I checked and could see a big patch of semen. I was half asleep and I moved a bit more to my side. I don't know if the semen touched the carpet in the jamaat kanah. It's worrying me.