Tahaarat

Q: Can the dried urine of a 7 month old child on a bed make the parents clothes 'napak'?

Q: If I was in the bathroom and mistakenly I stepped on my pants I was wearing, do my pants become napaak? Do I have to change my pants?

Q: What is istibraa and is it allowed in Islam?

Q: If I see white discharge the amount of 1 dirham after performing salah, should I repeat my salaah?

What should be considered as najasat, only the white discharge or both white discharge and the wet part around it?

Q: Two days ago, there was dog sniffing the pathway for a long time. I saw a small handful puddle of wetness. So on that area I pushed the pram back and front again twice. After couple of days, my son used to play with the pram tyre by rolling it on his hand. He did that with wet hands and touched utensils with wet hands to eat and below where I have later placed utensils on top when wet. Now I know if a dog licked it we have to wash the earth 7 times. Now because of the saliva that has spread on my house must I wash each utensil that have been touched by him. 

Q: When my semen discharged from the place and some of it fell on my room mat but instantly I cleared the dirty place with a cloth. Now I'm confused, shoud I wash that particular place which got affected by my discharge or shoud I wash the whole mat?

Q: If a lizard falls on my shoulder from the wall, will ghusal be farz on me?

Q: I just got 4 of my wisdom teeth removed and my gums are in pain and constantly bleeding. If I rinse my mouth a bunch of blood comes out. So how do I make wudhu, and how do I pray?

Q: I have some health issues and I have to renew wudhu before a salah starts because I am a mazoor or excused person (urine comes out). Can I do tayammun instead of wudhu? Because it takes me 10 minutes to do wudhu and I am not well plus if I wash my body parts too much they get dry. 

Q:

1. I was in my mother's house and my son urinated on my mom. My mum dried the urine with a tissue and mopped the area once. Then she washed my son just by wiping him with wet hands. I feel that he has not been cleansed properly. I brought him to my house immediately because wherever he touches with wet hands will become naajis since I still didn't wash him properly. The areas that he touched with his hands became naajis, so do I have to wipe that area that he touched also?

2. There are soiled urine clothes. Previously I used to wash them in a bucket 3 times but I don't squeeze the water out. Must I wash the clothes and clothes dryer rack again or will just wiping the clothes dryer rack suffice?