(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." (AR)
Reference (AR): Sahih Muslim 2251 (AR)
In-book reference (AR): Book 40, Hadith 19 (AR)
USC-MSA web (English) reference(deprecated numbering scheme): Book 27, Hadith 5597 (AR)