I did not hear the Messenger of Allah ﷺ making a concession for anything people say falsely except in three matters. The Messenger of Allah ﷺ would say: I do not count as a liar a man who puts things right between people, saying a word by which he intends only putting things right, and a man who says something in war, and a man who says something to his wife, or a wife who says something to her husband. (Using translation from Abū Dāʾūd 4921)
أَنَّهَا سَمِعَتْ رَسُولَ اللهِ ﷺ لَا يُرَخَّصُ فِي شَيْءٍ مِنَ الْكَذِبِ إِلَّا فِي ثَلَاثٍ كَانَ رَسُولُ اللهِ ﷺ يَقُولُ «لَا أَعُدُّهُ كَذِبًا الرَّجُلُ يُصْلِحُ بَيْنَ النَّاسِ يَقُولُ الْقَوْلَ يُرِيدُ الصَّلَاحَ وَالرَّجُلُ يَقُولُ الْقَوْلَ فِي الْحَرْبِ وَالرَّجُلُ يُحَدِّثُ امْرَأَتَهُ وَالْمَرْأَةُ تُحَدِّثُ زَوْجَهَا» خَالَفَهُ يُونُسُ بْنُ يَزِيدَ