None of you should say: "My soul has become evil," but he should say: "My soul has become remorseless." This hadith has been transmitted on the authority of Abu Bakr with a slight variation of wording.
Sahih Muslim Book 40, Hadith 17
← Previous Hadith None of you should say: Supply drink to your lord, feed your lord, help your lord in performing ablution, and none of you should say: My Lord. He should say: My chief, my patron; and none of you should say: My bondman, my slave-girl, but simply say: My boy, my girl, my servant.

Sahih Muslim Book 40, Hadith 16 Next Hadith → This hadith has been narrated on the authority of Abia Mu'iwiya with the same chain of transmitters.

Sahih Muslim Book 40, Hadith 18