Sunan Abi Dawud 1400
سنن أبي داود#1400Hasanحَدَّثَنَا عَمْرُو بْنُ مَرْزُوقٍ، أَخْبَرَنَا شُعْبَةُ، أَخْبَرَنَا قَتَادَةُ، عَنْ عَبَّاسٍ الْجُشَمِيِّ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " سُورَةٌ مِنَ الْقُرْآنِ ثَلاَثُونَ آيَةً تَشْفَعُ لِصَاحِبِهَا حَتَّى يُغْفَرَ لَهُ { تَبَارَكَ الَّذِي بِيَدِهِ الْمُلْكُ } " .
Narrated AbuHurayrah: The Prophet (ﷺ) said: A surah of the Qur'an containing thirty verses will intercede its reader till he will be forgiven. That is: "Blessed is He in Whose Hand is the sovereignty" (Surah)
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: 6:30