[Machine] I heard the Messenger of Allah ﷺ saying, "Those who frequently curse will not be witnesses or intercessors." "Muslim reported it with this wording." This is reported by Muslim.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «لَا يَكُونُ اللَّعَّانُونَ شُهَدَاءَ وَلَا شُفَعَاءَ» «وَقَدْ خَرَّجَهُ مُسْلِمٌ بِهَذَا اللَّفْظِ» هذا خرجه مسلم