(52) باب مَخَافَةِ الْمُؤْمِنِ أَنْ يَحْبَطَ عَمَلُهُ
This hadith has been narrated on the authority of Anas b. Malik by another chain of transmitters in which these words are found:
Thabit b. Qais was the orator of the Ansar, when this verse was revealed: the rest of the hadith is the same with the exception that there is no mention of Sa'd b. Mu'adh in it.
Reference: Sahih Muslim 119 b
In-book reference: Book 1, Hadith 222
USC-MSA web (English) reference(deprecated numbering scheme): Book 1, Hadith 215