He who has no integrity has no faith, and he who does not keep his covenant has no religion

Anas ibn Mālik (may Allah be pleased with him) informs that the Prophet (may Allah's peace and blessings be upon him) rarely delivered a sermon or gave advice without mentioning two things: First: There is no complete faith for he who harbors betrayal toward anyone regarding his wealth, person, or family. Second: There is no complete religion for he who betrays covenants and treaties and breaks them.