Abu Umama bin Sahl bin 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."
Hadith Referenceصحيح مسلم / كتاب الألفاظ من الأدب وغيرها / 2251
Narrated Sal: The Prophet said, "None of you should say Khabuthat Nafsi but he is recommended to say 'Laqisat Nafsi (See Hadith No. 202)
Shaykh Abdul Sattar al-Hammad
Hadith Commentary: (1) From this hadith, it is understood that a person should choose such words for himself that are not contrary to his honor and dignity; one should avoid such bad words and bad names that are against human respect. (2) In the hadith, the use of the word "laqis" is recommended instead of "khabith," even though both have the same meaning, but the word "khabith" and its apparent meaning were against human dignity; therefore, it was advised to refrain from it. The Messenger of Allah (sallallahu alayhi wa sallam) himself would also replace bad names with good ones. (Fath al-Bari: 10/692)
Source: Hidayat al-Qari: Commentary on Sahih Bukhari, Urdu, Page: 6180
Abu Umamah bin Sahl bin Hunaif quoted his father as saying: None of you must say Khabuthat nafsi (My heart is heaving), but one should say Laqisat nafsi (My heart is being annoyed).
Shaykh Umar Farooq Saeedi
Benefits and Issues: Since the words "khubth" and "khabeeth" are also applied to false beliefs of disbelief (lies) and unlawful actions, therefore, it has been instructed that a Muslim's tongue should remain pure from inappropriate words.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 4978