The Complete Pilgrimage Guide · Hadith 425 (#Ḥadīth #9)
Chapter 63 | The Reward for the Ziyārah of Ĥusain Is Equal to the Reward of Performing an ‘Umrah
9 حَدَّثَنِي جَمَاعَةُ أَصْحَابِنَا عَنْ أَحْمَدَ بْنِ إِدْرِيسَ وَ مُحَمَّدِ بْنِ يَحْيَى الْعَطَّارِ عَنِ الْعَمْرَكِيِّ بْنِ عَلِيٍّ عَنْ بَعْضِ أَصْحَابِهِ عَنْ بَعْضِهِمْ (ع) قَالَ أَرْبَعُ عُمَرٍ تَعْدِلُ حِجَّةً وَ زِيَارَةُ قَبْرِ الْحُسَيْنِ ع تَعْدِلُ عُمْرَةً
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.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).