Q: Suppose, I injured my hand and later the blood dries. I do not know exactly what it is, whether a lump of dried blood, yellow pus or something else? Is it najis? Is it problematic to make wuḍū’ with such a wound?
A: When a wound is going to heal, we find some yellow pus, etc. around the wound. In case, one is not sure that it is mixed with blood, it is not najis and there is no problem in making wuḍū’.