وَعَنْ عُثْمَانَ بْنِ عَفَّانَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَنْ أَدْرَكَهُ الْأَذَانُ فِي الْمَسْجِدِ ثُمَّ خَرَجَ لَمْ يَخْرُجْ لِحَاجَةٍ وَهُوَ لَا يُرِيدُ الرّجْعَة فَهُوَ مُنَافِق» . رَوَاهُ ابْن مَاجَه
‘Uthman b. ‘Affan reported God’s Messenger as saying, “If the adhan is called when anyone is in the mosque and he goes out for any other reason than some necessary purpose, not intending to return, he is a hypocrite.” Ibn Majah transmitted it.