Sahih Muslim 1666
Sahih Muslim · Book 27: The Book of Oaths · The reward of a slave who is sincere towards his master and worships Allah properly
وَحَدَّثَنِيهِ زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا جَرِيرٌ ، عَنِ الأَعْمَشِ ، بِهَذَا الإِسْنَادِ .
The above hadith has been reported through another chain of transmitters on the authority of Abu Huraira.