Sahih Muslim Book - 45, Hadith - 6633

حَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى ، أَخْبَرَنَا ابْنُ وَهْبٍ ، أَخْبَرَنِي يُونُسُ ، عَنِ ابْنِ شِهَابٍ ، أَخْبَرَنِي حُمَيْدُ بْنُ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ ، أَنَّ أُمَّهُ أُمَّ كُلْثُومٍ بِنْتَ عُقْبَةَ بْنِ أَبِي مُعَيْطٍ ، وَكَانَتْ مِنَ الْمُهَاجِرَاتِ الأُوَلِ ، اللاَّتِي بَايَعْنَ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، أَخْبَرَتْهُ ، أَنَّهَا سَمِعَتْ رَسُولَ اللهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، وَهُوَ يَقُولُ : لَيْسَ الْكَذَّابُ الَّذِي يُصْلِحُ بَيْنَ النَّاسِ ، وَيَقُولُ خَيْرًا وَيَنْمِي خَيْرًا. قَالَ ابْنُ شِهَابٍ: وَلَمْ أَسْمَعْ يُرَخَّصُ فِي شَيْءٍ مِمَّا يَقُولُ النَّاسُ كَذِبٌ إِلاَّ فِي ثَلاَثٍ : الْحَرْبُ ، وَالإِصْلاَحُ بَيْنَ النَّاسِ ، وَحَدِيثُ الرَّجُلِ امْرَأَتَهُ وَحَدِيثُ الْمَرْأَةِ زَوْجَهَا.

Humaid bin 'Abdur-Rahman bin 'Awf narrated that his mother, Umm Kulthum bint 'Uqbah bin Abi Mu'ait - who was one of the first Muhajir women who swore allegiance to the Prophet (s.a.w) - told him that she heard the Messenger of Allah (s.a.w) say: "He is not a liar who reconciles between people, saying good things and conveying good things." Ibn Shihab said (in his Hadith that she said): "I did not hear of any concession being granted concerning anything that people call lies except in three cases: War, reconciling among people, and what a man says to his wife or a woman says to her husband."