9. A group of our companions narrated to me from Aḥmad ibn Idrīs, and from Muḥammad ibn Yaḥyā Al-‘Aťťār, from ‘Amraki ibn ‘Ali, from some of his companions, from one of them (the infallible Imams ), who said: Performing four ‘Umrah is equal to performing a Hajj, and going to the Ziyārah of the grave of Ḥusain is equal to performing an ‘Umrah.