The slogan of the Muhajirun was "Abdullah," and the slogan of the Ansar was "Abdul-Rahman."
حدثنا سعيد بن منصور حدثنا يزيد بن هارون عن الحجاج عن قتادة عن الحسن
كان شعار المهاجرين عبد الله وشعار الأنصار عبد الرحمن
No references are available.
Grading, its isnad is daif. Bayhaqi (6/361) narrated it from the hadith of Abu Dawud, from him.Hajjaj bin Artah and Qatada are both mudallis narrators, and they narrated using the term "an" (indicating possible concealment of the chain).