The Prophet ﷺ said: None of you must say: "My slave" (abdi) and "My slave-woman" (amati), and a slave must not say: "My lord" (rabbi or rabbati). The master (of a slave) should say: "My young man" (fataya) and "My young woman" (fatati), and a slave should say "My master" (sayyidi) and "My mistress" (sayyidati), for you are all (Allah's slave and the Lord is Allah, Most High.

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ يَقُولَنَّ أَحَدُكُمْ عَبْدِي وَأَمَتِي وَلاَ يَقُولَنَّ الْمَمْلُوكُ رَبِّي وَرَبَّتِي وَلْيَقُلِ الْمَالِكُ فَتَاىَ وَفَتَاتِي وَلْيَقُلِ الْمَمْلُوكُ سَيِّدِي وَسَيِّدَتِي فَإِنَّكُمُ الْمَمْلُوكُونَ وَالرَّبُّ اللَّهُ ﷻ

The Prophet ﷺ said: None of you must say: "My slave" (abdi) and "My slave-woman" (amati), and a slave must not say: "My lord" (rabbi or rabbati). The master (of a slave) should say: "My young man" (fataya) and "My young woman" (fatati), and a slave should say "My master" (sayyidi) and "My mistress" (sayyidati), for you are all (Allah's slave and the Lord is Allah, Most High. (Using translation from Abū Dāʾūd 4975)

قَالَ النَّبِيُّ ﷺ لَا يَقُولَنَّ أَحَدُكُمْ عَبْدِي وَأَمَتِي وَلَا يَقُولَنَّ الْمَمْلُوكُ رَبِّي وَرَبَّتِي لِيَقُلِ الْمَالِكُ فَتَايَ وَفَتَاتِي وَلْيَقُلِ الْمَمْلُوكُ سَيِّدِي وَسَيِّدَتِي فَإِنَّهُمُ الْمَمْلُوكُونَ وَالرَّبُّ اللهُ ﷻ

The Prophet ﷺ said: None of you must say: "My slave" (abdi) and "My slave-woman" (amati), and a slave must not say: "My lord" (rabbi or rabbati). The master (of a slave) should say: "My young man" (fataya) and "My young woman" (fatati), and a slave should say "My master" (sayyidi) and "My mistress" (sayyidati), for you are all (Allah's slave and the Lord is Allah, Most High. (Using translation from Abū Dāʾūd 4975)

أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَا يَقُولَنَّ أَحَدُكُمْ عَبْدِي وَأَمَتِي وَلَا يَقُلِ الْمَمْلُوكُ رَبِّي وَرَبَّتِي وَلَكِنْ لِيَقُلِ الْمَالِكُ فَتَايَ وَفَتَاتِي وَالْمَمْلُوكُ سَيِّدِي وَسَيِّدَتِي فَإِنَّكُمُ الْمَمْلُوكُونَ وَالرَّبُّ اللهُ سُبْحَانَهُ وَتَعَالَى

Abu Hurayra reported that the Prophet ﷺ said, "None of you should say 'my slave ('abdi or amati)' and a slave should not say, 'my lord (rabbi or rabbati)'. They should say, 'my boy' or 'my girl' (fatayi and fatati) and 'my master' or 'mistress' (sayyidi and sayyidati)'. All of you are slaves, and the Lord is Allah, Almighty and Exalted."

عَنِ النَّبِيِّ ﷺ قَالَ لاَ يَقُولَنَّ أَحَدُكُمْ عَبْدِي وَأَمَتِي وَلاَ يَقُولَنَّ الْمَمْلُوكُ رَبِّي وَرَبَّتِي وَلْيَقُلْ فَتَايَ وَفَتَاتِي وَسَيِّدِي وَسَيِّدَتِي كُلُّكُمْ مَمْلُوكُونَ وَالرَّبُّ اللَّهُ عَزَّ وَجَلَّ

"لا يَقولَنَّ أحَدُكُمْ: عَبْدي أوْ أمَتِي، وَلَا يَقُولَنَّ المَمْلُوكُ: ربِّي وَرَبَّتِي، وَلِيَقُلْ المَالِكُ: فَتَاي وَفَتَاتِي، وَليَقُلِ المَمْلُوكُ: سَيِّدِي وَسَيِّدَتِي؛ فَإِنَّكُمْ المَمْلوكونَ، وَالربُّ اللهُ ﷻ".