Tahaarat

Washing impurity

Q:

1. At times we put impure wet clothes in the machine and it touches the side of it, when removing it the clothes touches the same part wich the impure clothes touched, does it become impure again.

2. If 1 drop of urine falls on a wet cloth, is the whole cloth impure or only that part?

3. If impurity is found on clothing that is already washed in a machine, must all the clothes be washed again?

Brushing the teeth before ghusal

Q:

1. Should I brush my teeth in order to remove the yellow particles before ghusl of janabah or can I just gargle my mouth? (Just gargling wont remove the yellow particles on the teeth)

2. I know that if one food particle is stuck on the teeth and is less than the size of a chana then no problem but what about if many particles got stuck in many teeth?