Hadith 8:3013
Abu Bakr narrated to us, he said: Hafs narrated to us, from Hisham, from his father, from Miswar ibn Makhrama, from Umar: That he trotted quickly in the valley of Muhassir.
حدثنا أبو بكر قال نا حفص عن هشام عن أبيه عن مسور بن مخرمة عن عمر أنه أوضع في وادي محسر