Abu Dharr is reported as saying that he heard the Prophet, may
Allah bless him and grant him peace, say, "If a man accuses another man
of deviance or accuses him of disbelief, that accusation will come back
on him if his companion is not as he said."
حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، قَالَ: حَدَّثَنَا شُعْبَةُ، عَنْ زُبَيْدٍ قَالَ: سَمِعْتُ أَبَا وَائِلٍ، عَنْ عَبْدِ اللهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم: سِبَابُ الْمُسْلِمِ فُسُوقٌ، وَقِتَالُهُ كُفْرٌ.
'Abdullah reported that the Prophet, may Allah bless him and grant
him peace, said, "Reviling a Muslim is deviant behaviour and killing him
is disbelief."
Abu Dharr states that he heard the Prophet, may Allah bless him
and grant him peace, say, "A person who knowingly claims a father other
than his own has disbelieved. A person who claims to be from a people when
he is not one of them will take his place in the Fire. A person who calls
a man an unbeliever or says, 'Enemy of Allah,' when that is not the case
will have that come back on him."
حَدَّثَنَا مُحَمَّدُ بْنُ سِنَانٍ، قَالَ: أَخْبَرَنَا فُلَيْحُ بْنُ سُلَيْمَانَ، قَالَ: حَدَّثَنَا هِلاَلُ بْنُ عَلِيٍّ، عَنْ أَنَسٍ قَالَ: لَمْ يَكُنْ رَسُولُ اللهِ صلى الله عليه وسلم فَاحِشًا، وَلاَ لَعَّانًا، وَلاَ سَبَّابًا، كَانَ يَقُولُ عِنْدَ الْمَعْتَبَةِ: مَا لَهُ تَرِبَ جَبِينُهُ.
Anas said, "The Messenger of Allah, may Allah bless him and grant
him peace, was neither coarse nor a curser nor a reviler, He used to say
when he wanted to censure someone, 'What is wrong with him? May his brow
be dusty!'"
