Riyad as-Salihin

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

[Muslim].