Sunan an-Nasa'i, Book 39, Hadith 8 (In-Book) ⓘ
It was narrated that Jarir said: "I pledged to the Messenger of Allah to be sincere toward ever Muslim."
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ يَزِيدَ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ زِيَادِ بْنِ عِلاَقَةَ، عَنْ جَرِيرٍ، قَالَ بَايَعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم عَلَى النُّصْحِ لِكُلِّ مُسْلِمٍ .
also referenced under: Hadith 4156 (Reference) & Volume 5, Book 39, Hadith 4161 (DarusSalam)