'Abdullaah ibn 'Amr (Radia-Allaahu 'anhu) narrated: "It was said to the Messenger of Allaah (Salla-Allaahu 'alayhi wa sallam): 'Which of the people is best?' He said: 'Everyone whose heart is Makhmoom and truthful (sincere) in speech.' They said: 'Truthful (and sincere) in speech we know, but what is a heart that is Makhmoom?'…