Sahih Muslim 2136
Sahih Muslim · Book 38: The Book of Manners and Etiquette · It Is Disliked To Use Objectionable Names And Names Such As Nafi' (Beneficial) Etc
Samura b. Jundub reported AUah's Messenger (ﷺ) as saying:
وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، حَدَّثَنَا جَرِيرٌ ، عَنِ الرُّكَيْنِ بْنِ الرَّبِيعِ ، عَنْ أَبِيهِ ، عَنْ سَمُرَةَ، بْنِ جُنْدَبٍ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تُسَمِّ غُلاَمَكَ رَبَاحًا وَلاَ يَسَارًا وَلاَ أَفْلَحَ وَلاَ نَافِعًا " .
Don't give names to your servants as Rabdh, 'Ya ar, Aflah and Nafi'.