(4) باب كَرَاهَةِ قَوْلِ الإِنْسَانِ خَبُثَتْ نَفْسِي
Abu Umama b. Sahl b. Hunaif, on the authority of his father, reported Allah's Messenger (ﷺ) as saying:
None of you should say:" My soul has become evil," but he should say:" My soul has become remorseless." (PT)
Reference (PT): Sahih Muslim 2251 (PT)
In-book reference (PT): Book 40, Hadith 19 (PT)
USC-MSA web (English) reference(deprecated numbering scheme): Book 27, Hadith 5597 (PT)