Impurities

Doubts and waswasas regarding purity

Q:

(A) I had a shower at night. I washed my slippers and feet whilst in the shower.

(B) Then I went out of the house for just over 2 hours wearing the same slippers. When I returned home it is most likely that, by that time, my slippers were dry.

(C) I then got in to the sleeping bag, which I have borrowed from my parents home and which I am using at my house. At the time I went to sleep in the sleeping bag it is most likely that my feet were dry. At the time of sleeping, I thought to myself, when I wake up in the morning I must wash my feet and slippers again as a precautionary measure.

Urine drops problem

Q:

1. Once after urinating some drops came and I touched it with my hand which was less than a dirham. At that time I assumed it to be water and ignored but now I think it was urine and with this same hand I touched the water bottle and I didn't wash it. Since then when I fill the bottle with cool water the outer portion also gets wet and my hand too, so was my hand najis all the time and I might have touched other objects after the hands got wet. I also might have prayed salaah in this way. Will my salah be valid? At that time the impurity was less than a dirham, but due to filling the water as the outer portion also gets wet, will the impurity spread and exceed the size of a dirham and make me najis as well?

2. I get a lot of waswasas about purity and about many other things. Please tell some effective ways to fight these waswasas. I try to ignore but I fail.

Mazi on one's clothing

Q: There were very small tiny spots of madhi on my undergarments (very much smaller than the excusable diameter) and when I make istinja the front organ is wet and touched the area but nothing got onto me so as the impurity was of excusable amount can I regard myself as pure even after the wetness from my body touched that area?

Doubts regarding purity

Q: My friend ate chicken and washed his hands and then he met me and touched my shirt then I noticed his hands and they were wet and then I found out that he ate chicken by asking him. His hands were wet when he touched me and I don't know whether the oil of the chicken was still there on his hands or not and I don't know if it is haram or halal (chicken). Is my shirt paak?