Sahih Muslim | Book 30 | Hadith Number 5722

Narrated by Anas
Anas reported: When Allah's Messenger (may peace be upon him) came to Medina, Abla Talha took hold of my hand and brought me to Allah's Messenger (may peace be upon him) and said: Allah's Messenger, 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.