https://abukhadeejah.com/repentance-of-the-person-of-knowledge-from-his-error-and-an-innovator-from-his-innovation-ahmad-ibn-hanbal-d-241h-ibn-muflih-d-763h-ibrahim-at-taymi-d-72h/
"Repentance of the person of knowledge from his error and an innovator from his innovation" - Ahmad Ibn Hanbal (d.241H), Ibn Muflih (d.763H), Ibrāhīm At-Taymī (d.72H)