Until a few days ago, I was performing my istinja in the shower after having briefly wiped with a tissue. Today too, I fell in to the same trap, as at the last minute, I needed the toilet (to pass stool and urine) and I was getting late for Jum’ah. I wiped with a tissue. At the the time of washing myself in the shower, I saw the colour of the water change to brown (from the remaining faeces) as I washed my private parts. Similarly, the odd drop of urine was still coming out. I am not proud of this, nor do I consider it to be anything virtuous.
Directly under the shower head is a plastic shampoo bottle. Whilst washing my private parts, water inevitably went on to the bottle. I say, inevitable, because I do not go around monitoring the issue. It is also likely that during the rest of the ghusl process water lands on the bottle. Again, I can’t be sure. Furthermore, when I turn the shower off, the head is positioned such that some of the remaining water in the head must to drip on to the bottle.
My wife usually uses the shower after me and handles the bottle in order to use the shampoo, as she did today. She must obviously wash the shampoo off. How effectively or to what extent she does that, I don’t know.
This may sound far-fetched, but, after exiting the bathroom, does the water that drips from her hand, face, hair, feet etc on to the carpet render it impure for the purposes of Salah or to walk on with wet feet after performing wudhu or is it paak?