Sunan Abi Dawud 5210
سنن أبي داود#5210Sahihحَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا عَبْدُ الْمَلِكِ بْنُ إِبْرَاهِيمَ الْجُدِّيُّ، حَدَّثَنَا سَعِيدُ بْنُ خَالِدٍ الْخُزَاعِيُّ، قَالَ حَدَّثَنِي عَبْدُ اللَّهِ بْنُ الْمُفَضَّلِ، حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ أَبِي رَافِعٍ، عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ، رضى الله عنه - قَالَ أَبُو دَاوُدَ رَفَعَهُ الْحَسَنُ بْنُ عَلِيٍّ - قَالَ " يُجْزِئُ عَنِ الْجَمَاعَةِ، إِذَا مَرُّوا أَنْ يُسَلِّمَ، أَحَدُهُمْ وَيُجْزِئُ عَنِ الْجُلُوسِ أَنْ يَرُدَّ أَحَدُهُمْ " .
Narrated Ali ibn AbuTalib: AbuDawud said: Al-Hasan ibn Ali traced this tradition back to the Prophet (ﷺ): When people are passing by, it is enough if one of them gives a salutation on their behalf, and that it is enough for those who are sitting if one of them replies
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:
In-book reference: 43:438