Muwatta Malik

Yahya related to me from Malik from Yahya ibn Said that once Umar ibn al-Khattab left after doing the asr prayer and met a man who had not been there. Umar asked him what had kept him from the prayer and eventhough the man gave a good reason, Umar said, ""You have given yourself short measure."" Yahya added that Malik commented, ""It is said that everything has a short measure and a full measure