'Aishah (May Allah be pleased with her) said:
The Prophet (ﷺ) said, "None of you should say: 'My soul has become evil.' He should say: 'My soul is in bad shape."'[Al-Bukhari and Muslim]. (IT)
App reference (IT): Book 18, Hadith 229 (IT)
Arabic/English book reference (IT): Book 18, Hadith 1739 (IT)