Wa Alaikum As'salam dear brother,
First, welcome to the board. May Allah Almighty continue to lead you and keep you in Islam. Ameen.
I have one issue with your post. Please do not post empty assertions here. You said:
"there is a hadith witch says that muhammad said don't enter the homes of thamud"
I am not aware of such Hadith. Therefore, I will have to assume that it is a fabricated lie that was passed to you. Many infidels fabricate lies on the internet to confuse Muslims.
Also, when you address our Prophet, please say "Prophet Muhammad". Not just Muhammad.
Take care,
Osama Abdallah