What is the phlegm that does not invalidate fasting: Is it that which comes from the trachea or from the nostril opening into the mouth?
Source: FtawySummarized from the full answer at Ftawy · imported Sep 2, 2026
Phlegm is blood that has partially matured. It is congealed and solidified like mucus, expelled from the chest or dropping from the head. If it does not reach the apparent limit, it does not invalidate the fast. However, if it reaches the apparent limit and the person is able to expel it but swallows it, then it invalidates the fast.
Summarized from the full answer at Ftawy · imported
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