Sahih Adab al-Mufrad

It is narrated from Sayyiduna Anas (may Allah be pleased with him) that he said: When the Prophet (peace and blessings of Allah be upon him) came to Madinah, he had no servant with him. Abu Talhah (may Allah be pleased with him) took my hand and brought me to the Prophet (peace and blessings of Allah be upon him) and said: O Prophet of Allah! This is Anas, a sensible and intelligent boy; he will serve you. Sayyiduna Anas (may Allah be pleased with him) states: Then I served the Prophet (peace and blessings of Allah be upon him) in Madinah from his arrival until his passing, in both travel and residence, but the Prophet (peace and blessings of Allah be upon him) never said to me regarding any task I did, "Why did you do this?" nor regarding any task I did not do, "Why did you not do this?"