Is it permissible to expel phlegm from the airway in the mosque?
Machine translationRead the Arabic original
Question : Or (peace and blessings be upon him). How? With a loud voice. Yes.
Answer : It may sometimes be a source of annoyance, because some people cannot bear to hear anyone making a show of expelling phlegm. However, sometimes the worshipper is only annoyed by this. So do we say, "Occupy yourself with this mat instead of the prayer," or do we say, "There is no harm in it"? This is a matter where one raises his voice slightly and then it is gone.
Answer : It may sometimes be a source of annoyance, because some people cannot bear to hear anyone making a show of expelling phlegm. However, sometimes the worshipper is only annoyed by this. So do we say, "Occupy yourself with this mat instead of the prayer," or do we say, "There is no harm in it"? This is a matter where one raises his voice slightly and then it is gone.
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 652 - 4600 هل تكلف إخراج النخامة من الأدى في المسجد؟ ابن عثيمين — youtube.com
The Arabic text is a machine transcription of the audio recording.