Maxim 

  Mendacity resembles a violent blow, the scar of which remains,

though the wound may be healed. Seest thou not how the brothers of

Joseph became noted for falsehood, and no trust in their veracity

remained, as Allah the most high has said: Nay but ye yourselves

have contrived the thing for your own sake.

        One habitually speaking the truth

        Is pardoned when he once makes a slip

        But if he becomes noted for lying,

        People do not believe him even when speaking truth.