That she heard Messenger of Allah ﷺ saying, "He who makes peace between the people by inventing good information or saying good things, is not a liar." (Using translation from Bukhārī 2692)
أَنَّ أُمِّهَ وَهِيَ أُمُّ كُلْثُومٍ بِنْتُ عُقْبَةَ أَخْبَرَتْهُ أَنَّهَا سَمِعَتْ رَسُولَ اللهِ ﷺ يَقُولُ «لَيْسَ بِالْكَاذِبِ الَّذِي يُصْلِحُ بَيْنَ النَّاسِ فَيَنْمِي خَيْرًا أَوْ يَقُولُ خَيْرًا»