He (rahimahullaah) stated in his refutation against the Maatureediyyah:
Ahlul Bidah are the ones who kindle trials and disorder. They are a chaotic people and are deprived of safety and security. They are a people of trials and disturbance as opposed to Ahlul Hadeeth Was-Sunan (i.e. those who steadfastly follow the ahaadeeth of the Prophet and his Sunnah). Have they (i.e. the people of Sunnah) committed what the people of bidah and trials have committed?! The people of bidah trespass- alongside enmity and innovation- whilst Ahlus Sunnah respond and defend (the religion).
[Source: عداء الماتريدية للعقيدة السلفية 1/26-27]