And it was narrated to us by ʿUbayd Allāh ibn Muʿādh — and he is al-ʿAnbarī — who said: narrated to us my father, who said: narrated to us Shuʿbah, from ʿAdī — and he is Ibn Thābit — who heard ʿAbd Allāh ibn Yazīd, from Zayd ibn Thābit, from the Prophet, peace be upon him, who said: "Indeed it is Taybah — meaning Madīnah — and indeed it expels impurity just as fire expels the impurity of silver."