Sunan Abi Dawud 2595
سنن أبي داود#2595Da'ifحَدَّثَنَا سَعِيدُ بْنُ مَنْصُورٍ، حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ، عَنِ الْحَجَّاجِ، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ سَمُرَةَ بْنِ جُنْدُبٍ، قَالَ كَانَ شِعَارُ الْمُهَاجِرِينَ عَبْدُ اللَّهِ وَشِعَارُ الأَنْصَارِ عَبْدُ الرَّحْمَنِ .
Samurah bin Jundub said “The war-cry of the Emigrants was ‘Abd Allah and that of the helpers ‘Abd Al Rahman.”
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Al-AlbaniDaif
Muhammad Muhyi Al-Din Abdul HamidDaif
Shuaib Al ArnautDaif
Zubair Ali ZaiDaif
In-book reference: 15:119