Sunan Abi Dawud 889
سنن أبي داود#889Sahihحَدَّثَنَا مُسَدَّدٌ، وَسُلَيْمَانُ بْنُ حَرْبٍ، قَالاَ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ طَاوُسٍ، عَنِ ابْنِ عَبَّاسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " أُمِرْتُ " . قَالَ حَمَّادٌ أُمِرَ نَبِيُّكُمْ صلى الله عليه وسلم - أَنْ يَسْجُدَ عَلَى سَبْعَةٍ وَلاَ يَكُفَّ شَعْرًا وَلاَ ثَوْبًا .
Narrated Abdullah ibn Abbas: Ibn Abbas reported the Prophet (ﷺ) as saying: I have been commanded - according to the version of Hammad: Your Prophet (ﷺ) was commanded - to prostrate on seven (bones), and not to fold back the hair or the clothing
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: 2:499