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.