550 — Al-ʿAbbās al-ʿAnbarī related to me: ʿAbd al-Rahmān ibn Mahdī related to us: Sufyān related to us, from al-Aʿmash, from Abū al-Duhā, from Masrūq—may Allah have mercy on him—who said, “Nothing is graver in the sight of Allah than lying.”