And Ibn Abi 'Umar narrated to us, Sufyan narrated to us, from Abu al-Zinad, from al-A'raj, from Abu Hurayrah, from the Prophet, peace and blessings be upon him, who said: "If you say to your companion, 'Be quiet,' on Friday while the imam is delivering the sermon, then you have spoken vainly." Abu al-Zinad said: "This is the dialect of Abu Hurayrah; the correct form is 'laghawta' (you have spoken vainly)."