السلام عليكم ورحمة الله وبركاته, احسن الله اليك sometimes pre-seminal fluid (madhi) comes out I see it on my undergarment am I obligated to also check my pants/trousers that i was wearing on top I get these doubts that maybe my pants/trousers touched my undergarment and so it became najs

Ustadh AbdulAziz al-Haqqan

You can sprinkle some water on the inside outside a little bit so that u don't think about it much. Don't fall into waswas may Allah reward you