Hisham bin Urwah narrates from his father that Yazid bin Mu'awiyah wrote to Abdullah bin al-Zubayr: I have sent you a chain of silver, a shackle of gold and a neck-collar of silver, and I have sworn that you will come to me in that state. The narrator says: Ibn al-Zubayr (may Allah be pleased with them both) threw the letter away and (recited the verse): "I will not soften for anything other than the truth even by a fingertip, until the stone softens for the molar of the one who chews it."