Bismillah
Al-jawab billahi at-taufeeq (the answer with Allah's guidance)
There is a principle in Usulul Fiqh (fundamental principles of Islamic jurisprudence) which is known as, Istishab al-wasf (continuity of attribute) means to presume continuity of an attribute until the contrary is established.
All places are considered clean unless there are visible or clear traces of uncleanliness like, its colour, smell, or taste.
If there are visible or clear traces of uncleanliness then the practical way to remove filth from the floor or the areas which has been contaminated by the filth is to first remove all traces of the filth (If the colour or smell is difficult to remove, it need not be removed) by scrubbing it using any necessary cleaning agents and then wiping it with a cloth. After this, you only need to pour water over the surface to purify it. (Nurul Idhah Pg. 54)
In addition, performing Wudhu in such a place where the impurity is visible it will not invalidate your Wudhu but it will be disliked.
If you are in doubt of the surface being impure then one should discard their doubts.
Always trying to make things more difficult on yourself may lead to psychological problems and may open the doors for the Shaytan.
Just remember what Allah Ta'ala has said in the Quran,
"Allah intends for you ease, and He does not want to make things difficult for you." (2:185)
So be thankful to Him and stop worrying about the doubts and Wasawis (whispers).
And Only Allah Ta'ala Knows Best. |