حَدَّثَنَا سُفْيَانُ عَنْ عَمْرٍو عَنْ طَاوُسٍ عَنِ ابْنِ عَبَّاسٍ قَالَ أُمِرَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنْ يَسْجُدَ عَلَى سَبْعٍ وَنُهِيَ أَنْ يَكُفَّ شَعَرَهُ وَثِيَابَهُ
مسند امام احمد بن حنبل · Hadith 1927
It was narrated that Ibn 'Abbas said: The Messenger of Allah (PBUH) was commanded to prostrate on seven (parts) and was forbidden to tuck up his hair and garment.
Sanad
حَدَّثَنَا سُفْيَانُ عَنْ عَمْرٍو عَنْ طَاوُسٍ عَنِ ابْنِ عَبَّاسٍ