Silsilat al-Ahadith al-Sahihah

Bahz bin Hakim bin Muawiyah narrates from his father, and he from his grandfather Sayyiduna Muawiyah bin Haydah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, all of you will be called on the Day of Resurrection in such a state that your mouths will be sealed by a mouth seal, and the first thing from you that will clarify or speak on your behalf will be your thigh and your palm."