I served the Messenger of Allah ﷺ for ten years, and, by Allah, he never said to me any harsh word, and he never said to me about a thing as to why I had done that and as to why I had not done that. Abu Rabi' has made this addition (in this narration):" The work which a servant should do." There is no mention of his words" By Allah".  

خَدَمْتُ رَسُولَ اللَّهِ ﷺ عَشْرَ سِنِينَ وَاللَّهِ مَا قَالَ لِي أُفًّا قَطُّ وَلاَ قَالَ لِي لِشَىْءٍ لِمَ فَعَلْتَ كَذَا وَهَلاَّ فَعَلْتَ كَذَا زَادَ أَبُو الرَّبِيعِ لَيْسَ مِمَّا يَصْنَعُهُ الْخَادِمُ وَلَمْ يَذْكُرْ قَوْلَهُ وَاللَّهِ  

This hadith has been narrated on the authority of Anas through another chain of transmitters.  

عَنْ أَنَسٍ بِمِثْلِهِ  

When Messenger of Allah ﷺ came to Medina, Abla Talha took hold of my hand and brought me to Messenger of Allah ﷺ and said: Messenger of Allah, Anas is a prudent young boy, and he will serve you. He (Anas) said: I served him in journey and at home, but, by Allah, he never asked me about a thing which I did as to why I did so, nor about a thing which I did not do as to why I had not done that.  

لَمَّا قَدِمَ رَسُولُ اللَّهِ ﷺ الْمَدِينَةَ أَخَذَ أَبُو طَلْحَةَ بِيَدِي فَانْطَلَقَ بِي إِلَى رَسُولِ اللَّهِ ﷺ فَقَالَ يَا رَسُولَ اللَّهِ إِنَّ أَنَسًا غُلاَمٌ كَيِّسٌ فَلْيَخْدُمْكَ قَالَ فَخَدَمْتُهُ فِي السَّفَرِ وَالْحَضَرِ وَاللَّهِ مَا قَالَ لِي لِشَىْءٍ صَنَعْتُهُ لِمَ صَنَعْتَ هَذَا هَكَذَا وَلاَ لِشَىْءٍ لَمْ أَصْنَعْهُ لِمَ لَمْ تَصْنَعْ هَذَا هَكَذَا  

I served the Messenger of Allah ﷺ for nine years, and I do not know (of any instance) when he said to me: Why you have done this and that, and he never found fault with me in anything.  

خَدَمْتُ رَسُولَ اللَّهِ ﷺ تِسْعَ سِنِينَ فَمَا أَعْلَمُهُ قَالَ لِي قَطُّ لِمَ فَعَلْتَ كَذَا وَكَذَا وَلاَ عَابَ عَلَىَّ شَيْئًا قَطُّ  

By Allah, I would not go. I had, however, this idea in my mind that I would do as Allah's Apostle ﷺ had commanded me to do. I went out until I happened to come across children who had been playing in the street. In the meanwhile, Messenger of Allah ﷺ came there and he caught me by the back of my neck from behind me. As I looked towards him I found him smiling and he said: Unais, did you go where I commanded you to go? I said: Messenger of Allah, yes, I am going. Anas further said: I served him for nine years but I know not that he ever said to me about a thing which I had done why I did that, or about a thing I had left as to why I had not done that.  

أَنَسٌ كَانَ رَسُولُ اللَّهِ ﷺ مِنْ أَحْسَنِ النَّاسِ خُلُقًا فَأَرْسَلَنِي يَوْمًا لِحَاجَةٍ فَقُلْتُ وَاللَّهِ لاَ أَذْهَبُ وَفِي نَفْسِي أَنْ أَذْهَبَ لِمَا أَمَرَنِي بِهِ نَبِيُّ اللَّهِ ﷺ فَخَرَجْتُ حَتَّى أَمُرَّ عَلَى صِبْيَانٍ وَهُمْ يَلْعَبُونَ فِي السُّوقِ فَإِذَا رَسُولُ اللَّهِ ﷺ قَدْ قَبَضَ بِقَفَاىَ مِنْ وَرَائِي قَالَ فَنَظَرْتُ إِلَيْهِ وَهُوَ يَضْحَكُ فَقَالَ يَا أُنَيْسُ أَذَهَبْتَ حَيْثُ أَمَرْتُكَ قَالَ قُلْتُ نَعَمْ أَنَا أَذْهَبُ يَا رَسُولَ اللَّهِ قَالَ أَنَسٌ وَاللَّهِ لَقَدْ خَدَمْتُهُ تِسْعَ سِنِينَ مَا عَلِمْتُهُ قَالَ لِشَىْءٍ صَنَعْتُهُ لِمَ فَعَلْتَ كَذَا وَكَذَا أَوْ لِشَىْءٍ تَرَكْتُهُ هَلاَّ فَعَلْتَ كَذَا وَكَذَا  

Anas b. Malik reported that Messenger of Allah ﷺ was the best amongst people in disposition and behaviour.  

كَانَ رَسُولُ اللَّهِ ﷺ أَحْسَنَ النَّاسِ خُلُقًا