yesterday I have trimmed nails of my feet. so a small wound happened to my thumb. I hv cleaned it. but this morning when I took out shoe for doing wazu for jummah namaz, I saw a yellow coloured dry substance on the nail. so I don't know if it is blood or some curry which might have felt on the thumb while doing breakfast. what to do? bcz if it was blood then my shoe n socks might became najis.

there is no problem your prayer is ok, agar cnfm bhi ho ki blood hai aur thoda(hath ke anguthe ke pahle hisse ke barabar tak) hai to uspar namaz sahi hai