Impurities

Touching a wallet with impure hands

Q: If a wallet was touched with impure hands and a person keeps that wallet in their pocket and performed salaah with it, what is the validity of their salaah? 

I’m not sure what the impurity was as a few years ago it would be difficult to control impurities and most of the things I touched would become impure. I did wash/wipe the wallet but I’m not sure how long after that was.

Washing a carpet purchased from a non-Muslim

Q: I recently purchased a room carpet from a non-Muslim which I intend using as a carpet to perform Salaah on. 

There are no apparent traces of najaasat on the carpet but there are a few stains which look like they may be from food or drink. 

The carpet is too thick and big to be soaked and squeezed. In order to ensure the carpet is paak, must it be washed once, then left to dry; then washed again and left to dry, and washed a third time and left to dry; in order for it to be paak? Or will one wash and soak be sufficient?

Using vaseline petroleum jelly

Q: Are these halaal? 

Mineral oil, Paraffin, microcrystalline wax, tocopheryl acetate, fragrance. 

They are the ingredients of vaseline petroleum jelly skin protection. I searched them and mustakshif app said its haraam. I have a little amount of this on my shirt and phone because it was on my hands.