(2) How to wash najis clothes in washing machine?
(3) Before my maid used to wash all clothes in bath tub (mixed all pak and napak clothes do I have to wash them now or just pray with them?
In washing machine when I wash pak and napak clothes together do they become clean?
(1 & 2) The first method is to wash and clean the impurity of clothes before they are put in washing machine. The second method is to put the impure clothes in the machine and squeeze them thrice (by the machine or hand) then the clothes shall turn clean and paak. The clothes shall not turn clean only by squeezing once.
(3) The bath tub shall turn impure by putting unclean clothes in it. If the clothes are taken out from it and are washed three times with three new water and are squeezed each time then they will turn paak; otherwise they will not turn clean merely by washing three times in the water of tub.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband