كتاب السِّبَابِ
24  
Disparaging
(205)
Chapter: Someone says calls his brother an unbeliever
(205)
بَابُ مَنْ قَالَ لأَخِيهِ‏:‏ يَا كَافِرُ
Al-Adab Al-Mufrad 440
'Abdullah ibn 'Umar reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "When someone says to another, 'Unbeliever!' then one of them is an unbeliever. If the one to whom he says it is an unbeliever, he has spoke the truth. If that is not the case, then the one who said it has brought down disbelief on himself."
حَدَّثَنَا سَعِيدُ بْنُ دَاوُدَ، قَالَ‏:‏ حَدَّثَنَا مَالِكٌ، أَنَّ نَافِعًا حَدَّثَهُ، أَنَّ عَبْدَ اللهِ بْنَ عُمَرَ أَخْبَرَهُ، أَنَّ رَسُولَ اللهِ صلى الله عليه وسلم قَالَ‏:‏ إِذَا قَالَ لِلْآخَرِ‏:‏ كَافِرٌ، فَقَدْ كَفَرَ أَحَدُهُمَا، إِنْ كَانَ الَّذِي قَالَ لَهُ كَافِرًا فَقَدْ صَدَقَ، وَإِنْ لَمْ يَكُنْ كَمَا قَالَ لَهُ فَقَدْ بَاءَ الَّذِي قَالَ لَهُ بِالْكُفْرِ‏.‏
Grade: Sahih (Al-Albani)  صـحـيـح   (الألباني) حكم   :
Reference : Al-Adab Al-Mufrad 440
In-book reference : Book 24, Hadith 22
English translation : Book 24, Hadith 440