'A'isha reported that the Prophet ﷺ said, "None of you should say, 'khabuthat nafsi'. He should say, 'Laqisat nafsi.'"

عَنِ النَّبِيِّ ﷺ قَالَ لاَ يَقُولَنَّ أَحَدُكُمْ خَبُثَتْ نَفْسِي وَلَكِنْ لِيَقُلْ لَقِسَتْ نَفْسِي

Same with another isnad.

رَسُولِ اللهِ ﷺ قَالَ لاَ يَقُولَنَّ أَحَدُكُمْ خَبُثَتْ نَفْسِي وَلْيَقُلْ لَقِسَتْ نَفْسِي