Question Summary
What should I do if I fear that I have spread impurities all over the house due to my masturbation addiction?
Question Answer
In the Name of Allah, the Most Merciful and Compassionate
See the following links for help and tips to overcome your addiction:
https://seekersguidance.org/answers/living-religion/how-can-i-overcome-my-habit-of-masturbation/
https://seekersguidance.org/answers/general-counsel/a-reader-on-pornography-and-masturbation/
The Transference of Impurities
Your fear that you have spread impurities throughout your house is contrary to the legal rulings related to the spreading of impurities. Impure substances such as semen or others are only considered to have transferred to another object/surface if (a) they are wet or liquid, (b) they are dry but contact a wet surface, and the traces of the impurity are clearly perceptible on the wet surface.
See the following examples for more clarity:
The long-term cure for these constant doubts is to seek a deeper understanding of the Sacred Law. With knowledge, Shaytan can not deceive you with his whispers and plots.
I would advise that you find authentic scholars in your area and study with them a basic text in Islamic Jurisprudence. SeekersGuidance offers courses in the Islamic Legal Tradition at various levels, from beginners to advanced. The Islamic Studies Curriculum is a great place to start.
Hope this helps
Allah knows best
[Shaykh] Yusuf Weltch
Checked and Approved by Shaykh Faraz Rabbani