In another version recorded by Muslim he said, “Whomever Allah guides, none can lead astray; and whomever He lets go astray, none can guide.” 1
Al-Nasāʾī transmits from Jābir that, after declaring, “Every innovation is misguidance,” the Prophet, peace and blessings be upon him, added, “and every misguidance is in the Fire.” 2
The phrase “every innovation is misguidance” means that its originator is misguided. Linguistically, a bidʿah is anything produced without a precedent; in the present context it refers to any practice introduced without prior sanction from the Book or the Sunnah.
The hadith therefore proves that every innovation is a deviation and that the Prophet’s words are not a general statement later qualified, as some have alleged.