 أَبِی ره قَالَ حَدَّثَنِی عَبْدُ اللَّهِ بْنُ جَعْفَرٍ الْحِمْیَرِیُّ عَنْ أَحْمَدَ بْنِ عَبْدِ اللَّهِ عَنِ الْحَسَنِ بْنِ عَبْدِ اللَّهِ بْنِ عَمْرِو بْنِ الْأَشْعَثِ عَنْ عُمَرَ بْنِ یَزِیدَ قَالَ سَمِعْتُ أَبَا عَبْدِ اللَّهِ ع یَقُولُ الْحَجُّ أَفْضَلُ مِنْ عِتْقِ عَشْرِ رَقَبَاتٍ حَتَّی عَدَّ سَبْعِینَ رَقَبَهً وَ رَکْعَتَا الطَّوَافِ أَفْضَلُ مِنْ عِتْقِ رَقَبَهٍ.
10.  The narrator says that he heard Imam Ja’far Sadiq  say, “The reward of performing Hajj is more than freeing ten slaves.”  Imam    kept  on  counting  till  he  said  that  the reward of the acts of Hajj is more than freeing seventy slaves and  said  that  the  reward  of  circumambulation  and  a  two rakat prayer are equal to freeing a slave.”