Umm 'Atiyya reported that the Messenger of Allah ﷺ took pledge from us (including this promise) that we would not lament. Only five amongst us fulfilled the promise, and one of them (who fulfilled the promise) was Umm Sulaim.
أَخَذَ عَلَيْنَا رَسُولُ اللَّهِ ﷺ فِي الْبَيْعَةِ أَلاَّ تَنُحْنَ فَمَا وَفَتْ مِنَّا غَيْرُ خَمْسٍ مِنْهُنَّ أُمُّ سُلَيْمٍ