There was a little blood on the back of my shirt (maybe 4 or 5 drops), but I didn't know. I did my noon and evening prayers. When I got home around 9 PM I noticed the blood. Do I have to redo my prayer? or it's accepted as it is?
I heard there was something about wetting the clothes and wringing them out three times that meant that they weren't Najis anymore. But I'm not that sure about all the details though...