Aḥmad b. Yūnus reports:

I saw Zuhayr b. Muʿāwiyah come to Zāʾidah b. Qudāmah (d.160H) and speak to him to get him to narrate ḥadīth to a man, so Zāʾidah asked, Is he from Ahl Al-Sunnah? Zuhayr replied, I do not know that he has any bidʿah. Zāʾidah said, No, that is another matter! Is he from Ahl Al-Sunnah? Zuhayr said, Since when have people become like this? Zāʾidah replied, Since when did people curse Abū Bakr and ʿUmar?!

Al-Khaṭīb Al-Baghdādī, Al-Jāmiʿ li Akhlāq Al-Rāwī #754.