Ahnaf bin Qays reported,

I sat with a group of notables from Quraysh when a man came up to them, rough in his hair, clothing, and appearance, until he stood over them. He greeted them, then said, "Give tidings to those who hoard wealth of stones heated in the fire of Hell, which will then be placed on the nipple of one of their breasts until they come out from the tip of his shoulder, and placed on the tip of his shoulder until they come out from the nipple of his breast, shaking violently."Then he turned away and sat by a pillar. I followed him and sat with him, not knowing who he was.I said to him, "I do not think the people liked what you said."He replied, "They understand nothing." And the hadith continues.

عن الأحنف بن قيس قال

جلست إلى ملا من قريش، فجاء رجل، خشن الشعر والثياب والهيئة حتى قام عليهم، فسلم، ثم قال: بشر الكانزين برضف يحمى عليه في نار جهنم، ثم يوضع على حلمة ثدي أحدهم حتى يخرج من نغض كتفه، ويوضع على نغض كتفه حتى يخرج من حلمة ثديه، يتزلزل. ثم ولى، فجلس إلى سارية، وتبعته، وجلست إليه، وأنا لا أدرى من هو؟ فقلت له: لا أرى القوم إلا قد كرهوا الذي قلت. قال: إنهم لا يعقلون شيئا… الحديث.