Hadith 538
۞
14. And from the previous chain from Ahmad b. Abi Abdillah from Abi Abdillah (a.s.) who said
“If eighty people do a good deed together each person will get the reward equal to that of all the people without decrease in the reward of any one of them.”
وَ بِهَذَا الْإِسْنَادِ عَنْ أَحْمَدَ بْنِ أَبِی عَبْدِ اللَّهِ عَنْ أَبِی عَبْدِ اللَّهِ ع قَالَ
لَوْ جَرَی الْمَعْرُوفُ عَلَی ثَمَانِینَ کَفّاً لَأُجِرُوا کُلُّهُمْ مِنْ غَیْرِ أَنْ یَنْقُصَ مِنْ صَاحِبِهِ مِنْ أَجْرِهِ شَیْئاً.