The Book of Oaths
27/11. Chapter:
The reward of a slave who is sincere towards his master and worships Allah properly
Sahih Muslim
وَحَدَّثَنِيهِ زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا أَبُو صَفْوَانَ الأُمَوِيُّ، أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، بِهَذَا الإِسْنَادِ وَلَمْ يَذْكُرْ بَلَغَنَا وَمَا بَعْدَهُ .
This hadith has been transmitted on the authority of Abu Tahir but with a slight variation of words.
Reference : Sahih Muslim 1665bIn-book reference : Book 27, Hadith 68USC-MSA web (English) reference : Book 15, Hadith 4099