Hadees

Abu Hurairah(may Allah be pleased with him) reported: Messenger of
Allah(saw) said,"Follow the Right Path of Faith strictly,and be
steadfast;and keep in mindthat none of you can achieve salvation
through his (good) action." Someone asked,"Not even you,O Messenger of
Allah?" He (saw) said,"Not even me,unless Allah grants me His Mercy
and Grace." [Muslim]