(3) باب حُكْمِ إِطْلاَقِ لَفْظَةِ الْعَبْدِ وَالأَمَةِ وَالْمَوْلَى وَالسَّيِّدِ
Abu Huraira reported Allah's Messenger (ﷺ) as saying:
None of you should say: My bondman and my slave-girl, for all of you are the bondmen of Allah, and all your women are the slave-girls of Allah; but say: My servant, my girl, and my young man and my young girl.
Reference: Sahih Muslim 2249 a
In-book reference: Book 40, Hadith 13
USC-MSA web (English) reference(deprecated numbering scheme): Book 27, Hadith 5591