I saw Abu Dhar wearing a Burd (garment) and his slave too was wearing a Burd, so I said (to Abu Dhar), "If you take this (Burda of your slave) and wear it (along with yours), you will have a nice suit (costume) and you may give him another garment." Abu Dhar said, "There was a quarrel between me and another man whose mother was a non-Arab and I called her bad names. The man mentioned (complained about) me to the Prophet. The Prophet ﷺ said, "Did you abuse so-and-so?" I said, "Yes" He said, "Did you call his mother bad names?" I said, "Yes". He said, "You still have the traits of (the Pre-lslamic period of) ignorance." I said. "(Do I still have ignorance) even now in my old age?" He said, "Yes, they (slaves or servants) are your brothers, and Allah has put them under your command. So the one under whose hand Allah has put his brother, should feed him of what he eats, and give him dresses of what he wears, and should not ask him to do a thing beyond his capacity. And if at all he asks him to do a hard task, he should help him therein."  

رَأَيْتُ عَلَيْهِ بُرْدًا وَعَلَى غُلاَمِهِ بُرْدًا فَقُلْتُ لَوْ أَخَذْتَ هَذَا فَلَبِسْتَهُ كَانَتْ حُلَّةً وَأَعْطَيْتَهُ ثَوْبًا آخَرَ فَقَالَ كَانَ بَيْنِي وَبَيْنَ رَجُلٍ كَلاَمٌ وَكَانَتْ أُمُّهُ أَعْجَمِيَّةً فَنِلْتُ مِنْهَا فَذَكَرَنِي إِلَى النَّبِيِّ ﷺ فَقَالَ لِي أَسَابَبْتَ فُلاَنًا قُلْتُ نَعَمْ قَالَ أَفَنِلْتَ مِنْ أُمِّهِ قُلْتُ نَعَمْ قَالَ إِنَّكَ امْرُؤٌ فِيكَ جَاهِلِيَّةٌ قُلْتُ عَلَى حِينِ سَاعَتِي هَذِهِ مِنْ كِبَرِ السِّنِّ قَالَ نَعَمْ هُمْ إِخْوَانُكُمْ جَعَلَهُمُ اللَّهُ تَحْتَ أَيْدِيكُمْ فَمَنْ جَعَلَ اللَّهُ أَخَاهُ تَحْتَ يَدِهِ فَلْيُطْعِمْهُ مِمَّا يَأْكُلُ وَلْيُلْبِسْهُ مِمَّا يَلْبَسُ وَلاَ يُكَلِّفُهُ مِنَ الْعَمَلِ مَا يَغْلِبُهُ فَإِنْ كَلَّفَهُ مَا يَغْلِبُهُ فَلْيُعِنْهُ عَلَيْهِ  

We went to Abu Dharr (Ghifari) in Rabadha and he had a mantle over him, and his slave had one like it. We said: Abu Dharr, had you joined them together, it would have been a complete garment. Thereupon he said: There was an altercation between me and one of the persons among my brothers. His mother was a non-Arab. I reproached him for his mother. He complained against me to Allah's Apostle ﷺ. As I met Allah's Apostle ﷺ he said: Abu Dharr, you are a person who still has (in him the remnants) of the days (of Ignorance). Thereupon I said: Messenger of Allah, he who abuses (other) persons, they abuse (in return) his father and mother. He (the Holy Prophet) said: Abu Dharr, you are a person who still has (the remnants) of Ignorance in him They (your servants and slaves) are your brothers. Allah has put them in your care, so feed them with what you eat, clothe them with what you wear. and do not burden them beyond their capacities; but if you burden them (with an unbearable burden), then help them (by sharing their extra burden).  

مَرَرْنَا بِأَبِي ذَرٍّ بِالرَّبَذَةِ وَعَلَيْهِ بُرْدٌ وَعَلَى غُلاَمِهِ مِثْلُهُ فَقُلْنَا يَا أَبَا ذَرٍّ لَوْ جَمَعْتَ بَيْنَهُمَا كَانَتْ حُلَّةً فَقَالَ إِنَّهُ كَانَ بَيْنِي وَبَيْنَ رَجُلٍ مِنْ إِخْوَانِي كَلاَمٌ وَكَانَتْ أَمُّهُ أَعْجَمِيَّةً فَعَيَّرْتُهُ بِأُمِّهِ فَشَكَانِي إِلَى النَّبِيِّ ﷺ فَلَقِيتُ النَّبِيَّ ﷺ فَقَالَ يَا أَبَا ذَرٍّ إِنَّكَ امْرُؤٌ فِيكَ جَاهِلِيَّةٌ قُلْتُ يَا رَسُولَ اللَّهِ مَنْ سَبَّ الرِّجَالَ سَبُّوا أَبَاهُ وَأُمُّهُ قَالَ يَا أَبَا ذَرٍّ إِنَّكَ امْرُؤٌ فِيكَ جَاهِلِيَّةٌ هُمْ إِخْوَانُكُمْ جَعَلَهُمُ اللَّهُ تَحْتَ أَيْدِيكُمْ فَأَطْعِمُوهُمْ مِمَّا تَأْكُلُونَ وَأَلْبِسُوهُمْ مِمَّا تَلْبَسُونَ وَلاَ تُكَلِّفُوهُمْ مَا يَغْلِبُهُمْ فَإِنْ كَلَّفْتُمُوهُمْ فَأَعِينُوهُمْ  

"عَنْ المعْرورِ بْنِ سُوَيْدٍ قَالَ: مَرَرْتُ بِالرِّبْذَةِ فَرَأَيْتُ أَبَا ذَرٍّ عَلَيْهِ بُرْدَةٌ وَعَلَى غُلَامِهِ أُخْتُهَا فَقَالَ (*) يَا أَبَا ذَرٍّ: لَوْ جَمَعْتَ هَاتَيْنِ فَكَانَتْ حُلَّةً، فَقَالَ سَأُخْبِرُكَ عَنْ ذَلِكَ إِنِّى سَابَبْتُ رَجُلًا مِنْ أَصْحَابِى وكَانَتْ أُمُّهُ أَعْجَمَّيةً فنلت مِنْهَا، فَأَتَى النَّبِىَّ ﷺ لِيعْذِرَهُ مِنِّى، فَقَالَ النِّبىُّ ﷺ يَا أَبَا ذَرٍّ إِن فِيكَ جَاهِلِيَّةً، قُلتُ يَا رَسُولَ الله: أَعَلَى سِنِّى هذِهِ مِنْ الكِبَرِ، فَقَالَ إِنَّكَ امْرؤٌ فيكَ جَاهِلِيَّةٌ، إِنَّهُمْ إِخْوَانُكُمْ جَعَلَهُم الله -تَعَالَى- فِتْنَةً لَكُمْ تَحْتَ أَيْدِيكُمْ، فَمَنْ كَانَ أَخُوهُ تَحْتَ يَدِهِ فَلْيُطعمهُ مِنْ طَعَامِهِ، وَلْيُلبِسْهُ مِنْ لِبَاسِهِ، وَلَا يُكَلِّفْهُ مَا يَغْلِبُهُ، فَإِنْ فَعَلَ فَلْيُعِنْهُ عَلَيْهِ".