Abu Huraira reported Messenger of Allah ﷺ as saying: None of you should say: My bondman, for all of you are the bondmen of Allah, but say: My young man, and the servant should not say: My Lord, but should say: My chief.
وَحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا جَرِيرٌ، عَنِ الأَعْمَشِ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي،
هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم
" لاَ يَقُولَنَّ أَحَدُكُمْ عَبْدِي . فَكُلُّكُمْ عَبِيدُ
اللَّهِ وَلَكِنْ لِيَقُلْ فَتَاىَ . وَلاَ يَقُلِ الْعَبْدُ رَبِّي . وَلَكِنْ لِيَقُلْ سَيِّدِي " .
• Sahih Muslim, 2249b
• Sahih Muslim, Vol. 5, Book of Concerning the Use of Correct Words, Hadith 5592
• Sahih Muslim, Book of Concerning the Use of Correct Words, Hadith 5592