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. (Using translation from Muslim 2309c)
لَمَّا قَدِمَ رَسُولُ اللهِ ﷺ إِلَى الْمَدِينَةِ أَخَذَ أَبُو طَلْحَةَ بِيَدِي فَانْطَلَقَ بِي إِلَى رَسُولِ اللهِ ﷺ فَقَالَ يَا رَسُولَ اللهِ إِنَّ أَنَسًا غُلَامٌ كَيِّسٌ فَلْيَخْدُمْكَ قَالَ فَخَدَمْتُهُ فِي السَّفَرِ وَالْحَضَرِ وَاللهِ مَا قَالَ لِي لِشَيْءٍ صَنَعْتُهُ لِمَ صَنَعْتَ هَذَا هَكَذَا؟ وَلَا لِشَيْءٍ لَمْ أَصْنَعْهُ لِمَ لَمْ تَصْنَعْ هَذَا هَكَذَا؟