Answered by Shaykh Abdul-Rahim Reasat
Question: Assalamu alaykum
When it has been raining and the ground is wet, sometimes the back of my trousers get wet whilst walking from the rain water on the ground, sometimes there may be dirt on my trousers, and other times there is no dirt but just wet from the water. The dirt is never faeces, but sometimes it may be slight mud or bits of material from the road. I wanted to know whether the rain water or the dirt particles make my clothes unclean?
Answer: Wa ‘alaykum assalam wa rahmatullah wa barakatuh.
I pray you are well.
Yes, it’s perfectly fine to pray in those clothes. You can assume that they are pure because the default ruling on most things is that they are pure. Rain water and mud do not affect the purity of garments. (Ibn ‘Abidin; Radd al Muhtar).
May Allah bless you with the best of both worlds.
[Shaykh] Abdul-Rahim Reasat