حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا سُفْيَانُ عَنْ عَمْرِو بْنِ دِينَارٍ عَنْ طَاوُسٍ عَنِ ابْنِ عَبَّاسٍ قَالَ أُمِرَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنْ يَسْجُدَ عَلَى سَبْعٍ وَلَا يَكُفَّ شَعْرًا وَلَا ثَوْبًا
مسند امام احمد بن حنبل · Hadith 2436
It was narrated that Ibn 'Abbas (RA) said: The Prophet (PBUH) was commanded to prostrate on seven and not to tuck up his hair or garment.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020