Muwatta Malik

Yahya related to me from Malik from Ishaq ibn Abdullah ibn Abi Talha that Anas ibn Malik heard Umar ibn al-Khattab return the greeting of a man who greeted him. Then Umar asked the man, ""How are you?"" He said, ""I praise Allah to you."" (Ahmadu ilayka Allah) Umar said, ""That is what I wanted from you