https://abukhadeejah.com/decisive-words-salaf-stance-of-the-sunni-towards-those-lenient-ahlul-bidah-and-harsh-with-ahlus-sunnah-ali-madini/
The stance of the Sunnī towards those who are lenient with Ahlul-Bid'ah and harsh with Ahlus-Sunnah | Ahmad b. Hanbal with Alī b. Al-Madīnī