It was narrated from Ibn 'Abbas:

"The Prophet ﷺ was commanded to prostrate on seven-and he was forbidden to tuck up his hair and garment-on his hands, his knees, the edges of his feet." Sufyan said: "Ibn Tawus said to us: 'He put his hand on his forehead and moved it down to his nose and said: This one thing.'"

أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ الْمَكِّيُّ، وَعَبْدُ اللَّهِ بْنُ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ الزُّهْرِيُّ، قَالاَ حَدَّثَنَا سُفْيَانُ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ، أُمِرَ النَّبِيُّ ﷺ أَنْ يَسْجُدَ عَلَى سَبْعٍ - وَنُهِيَ أَنْ يَكْفِتَ الشَّعْرَ وَالثِّيَابَ - عَلَى يَدَيْهِ وَرُكْبَتَيْهِ وَأَطْرَافِ أَصَابِعِهِ . قَالَ سُفْيَانُ قَالَ لَنَا ابْنُ طَاوُسٍ وَوَضَعَ يَدَيْهِ عَلَى جَبْهَتِهِ وَأَمَرَّهَا عَلَى أَنْفِهِ . قَالَ هَذَا وَاحِدٌ وَاللَّفْظُ لِمُحَمَّدٍ .