Sunan Abi Dawud 908
سنن أبي داود#908Da'ifحَدَّثَنَا عَبْدُ الْوَهَّابِ بْنُ نَجْدَةَ، حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ الْفِرْيَابِيُّ، عَنْ يُونُسَ بْنِ أَبِي إِسْحَاقَ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْحَارِثِ، عَنْ عَلِيٍّ، - رضى الله عنه - قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " يَا عَلِيُّ لاَ تَفْتَحْ عَلَى الإِمَامِ فِي الصَّلاَةِ " . قَالَ أَبُو دَاوُدَ أَبُو إِسْحَاقَ لَمْ يَسْمَعْ مِنَ الْحَارِثِ إِلاَّ أَرْبَعَةَ أَحَادِيثَ لَيْسَ هَذَا مِنْهَا .
Narrated Ali ibn AbuTalib: The Messenger of Allah (ﷺ) said: Ali, do not instruct the imam during the prayer. Abu Dawud said: The narrator Abu Ishaq heard only for traditions from al-Harith, this tradition is not one of them
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — 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. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. Each scholar's own wording:
Our source also lists this ruling under Muhammad Muhyi Al-Din Abdul Hamid, the editor of the printed edition it was taken from. It is al-Albani's ruling printed again, so it is counted once.
In-book reference: 2:519