Is mucus or phlegm impure?
Q: Are any of the following regarded as impure in Shari'ah?
1. The mucus or phlegm that comes out of the nose or throat due to a cold, flu or sinus infection
2. The yellowish white mucus or phlegm that comes out of the nose or throat due to a cold, flu or sinus infection
3. The yellow or green colour mucus or phlegm that comes out of the nose or throat due to a cold, flu or sinus infection (could be pus).