Impurities

Is ambergris pure?

Q: I would like to know if ambergris is pure. I've heard that it is either the vomit or faeces of a sperm whale. In light of the Shafi and Hanafi madhab, would a perfume containing ambergris be ritually impure?

Washing mosquito blood stains from one's bedding

Q:

1. I have a problem of mosquito blood staining my bedding. I therefore wash that part only but do not do so 3x, sometimes only once because the blood is removed. Is this ok?

2. The water that falls elsewhere on my bedding from the washing of the blood, is it considered napaak? Do I have to wash that area where the water fell as well? - since the water has been used to wash blood.

3. Is the area where the above mentioned water fell has dried with no traces of impurity, will it be considered pure?

Sitting on a sofa which was messed with urine

Q: My wife is suffering from a serious disorder about purity. This is all due to urine.

If a child has urinated on a sofa and if someone sits there after its dried without being cleaned, will the other person be impure? Does he/she have to change their clothes?

If he/she sits somewhere else with those same clothes, would that place also be impure?

My wofe is really not well because of this and she’s always washing things, beds, clothes. etc.