 he said while muawiyah was telling yazid bin shajarah this hadith a stone struck yazids face causing it to bleed and the blood began to flow from his face onto his garment which was what he used to wipe his face with.
قال فبينا معاوية يحدث يزيد بن شجرة بهذا الحديث، إذ صك وجه يزيد حجر عائر فأدماه، وجعلت الدماء تسيل من وجهه على ثوبه، وهو ما يمسح وجهه.