رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 249
The Book of Miscellany
Making Peace among People
وَعَنْ أُمُّ كُلْثُومٍ بِنْتُ عُقْبَةَ بْنِ أَبِي مُعَيْطٍ رَضِيَ اللَّه عَنْهَا قَالَتْ سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: "لَيْسَ الْكَذَّابُ الَّذِي يُصْلِحُ بَيْنَ النَّاسِ فَيَنْمِي خَيْرًا، أَوْ يَقُولُ خَيْرًا" ((مُتَّفَقٌ عَلَيْهِ)). و في رواية مُسْلِم زيادة، قَالَتْ: "و لم اسمعه يرخصه في شيء مما يقوله النَّاسُ الا فِي ثَلاَثٍ، تعني: الحرب، و الاصلاح بين الناس، و حَدِيث الرجل امراته، و حَدِيث المرأة زوجها".
Umm Kulthum bint 'Uqbah (May Allah be pleased with her) reported: Messenger of Allah (ﷺ) said, 'The person who (lies) in order to conciliate between people is not a liar, when he conveys good or says (something) good". [Al-Bukhari and Muslim]. The narration in Muslim added: She said, "I never heard him (she meant the Prophet (ﷺ)) giving permission of lying in anything except in three (things): war, conciliating between people and the conversation of man with his wife and the conversation of a woman with her husband".
Riyad as-Salihin, 249