السلام عليكم ورحمة الله Dear Ustadh, today I wore white underwear and noticed faint brown traces at the place of my back exit. I did not relieve myself prior, it must have happened due to normal release of gas, sitting or walking. Do I need to change my clothes and wash my area for every prayer?

Ustadh AbdulAziz al-Haqqan
Why every prayer? How did you jump to this conclusion? Just this time wash, because it happened. Or is it waswas?