479 — Ahmad ibn Ibrāhīm narrated to us: ʿAbd al-Rahmān ibn Mahdī narrated to us: Sufyān narrated to us: ʿAbd al-Rahmān ibn ʿĀbis narrated to me: Some of the companions of ʿAbd Allāh—may Allah be pleased with him—narrated to me that he would say in his sermon: “The worst inventions are lying inventions, and the gravest of sins is a lying tongue.”