The Book of The At-Tatbiq (Clasping One's Hands Together)
12/56. Chapter:
The prohibition of tucking up the hair when prostrating
Sunan an-Nasai
أَخْبَرَنَا حُمَيْدُ بْنُ مَسْعَدَةَ الْبَصْرِيُّ، عَنْ يَزِيدَ، - وَهُوَ ابْنُ زُرَيْعٍ - قَالَ حَدَّثَنَا شُعْبَةُ، وَرَوْحٌ، - يَعْنِي ابْنَ الْقَاسِمِ - عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ طَاوُسٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " أُمِرْتُ أَنْ أَسْجُدَ عَلَى سَبْعَةٍ وَلاَ أَكُفَّ شَعْرًا وَلاَ ثَوْبًا " .
It was narrated from Ibn 'Abbas that : The Messenger of Allah (ﷺ) said: "I have been commanded to prostrate on seven and not to tuck up my hair or garment."
Reference : Sunan an-Nasa'i 1113In-book reference : Book 12, Hadith 85English translation : Vol. 2, Book 12, Hadith 1114